How to Build a Clothing Collection With Digital Sewing Patterns

A clothing collection to sell is built from a few base patterns, usually 3 to 6, that become variants in fabric, color, length or detail until you reach 8 to 15 styles, with the size range decided style by style. With digital patterns that already include the graded size range and are approved with a sample, the work stops being pattern development and becomes choosing what to produce, in what quantities and through which channel to sell it.

Modeltex production guide. Updated on Sep 6, 2026.

Base patterns and variants: the structure of the collection

A base pattern is a garment with a proven fit and a full size range: a t-shirt, a sweatshirt, a jogger, leggings, a dress. A variant is that pattern with a change that does not alter the fit: another fabric from the same family, another color, another length, a crew neck instead of a V-neck, a kangaroo pocket, a print. To the customer it is a different style; for production it shares the pattern, the marker, the sewing times and the tech pack.

That way the fit is consistent across the whole line, with fewer changes and returns; you make one sample per base instead of one per style; and you buy fabric from the same supplier in a few varieties. With the Modeltex catalog you choose your bases by category (women's, men's, kids', unisex) with the full size range included, and you spend your development time on variants and on selling.

How many styles and what mix

For a first collection or a capsule, 8 to 15 styles is a manageable range (a rough guide): enough to put together outfits and a storefront display without scattering money on fabric and stock. Aim for 60 to 70% of your units to be rotating basics (t-shirt, sweatshirt, jogger, leggings, shirt) and the rest statement pieces, which attract customers and help sell the basics.

Keep the palette to 3 to 5 colors that go together, so any top works with any bottom. Every new fabric adds a minimum roll purchase, a shrinkage test and a sample; every new color adds stock per size. Three bases in five colors will do more for you than fifteen bases in one.

Size range per style, not per catalog

Basics are produced in the full size range, for example XS to 4XL for adults, because they are what customers come back for and where a missing size is a lost sale. Statement or higher-risk pieces can go out in a short range (S to XL) and be extended if they sell. Since the digital pattern includes every size, extending the range costs no patternmaking: it costs fabric and stock, and that decision is made style by style.

The distribution by size depends on the channel and the audience; as a rough guide for everyday women's wear, the middle of the range (S, M and L) accounts for 70 to 80% of sales. Regulations aside, a broad size range on your basics sells.

Season and production calendar

Most brands work in two seasons, fall-winter and spring-summer, and wholesale buyers order two or three months before the season reaches the shops. Plan backward from the launch date through sewing, cutting, fabric buying and samples. For a small capsule the full development usually takes 8 to 12 weeks (a rough guide), and fabric is often the bottleneck.

Brands that sell through Instagram slot in capsules every 6 to 8 weeks within the season, with fewer styles per drop and more frequency, without piling up stock. With stable base patterns, each capsule is a matter of changing fabric, color and detail on what already works.

Sample, fit and tech pack before the production run

For each base, make a sample in the final fabric, not a similar one, in the middle size; wash it and try it on a real body. It confirms the fit with your fabric, measures the real sewing time for costing and gives you photos for pre-orders. Modeltex patterns are already approved with a sewn sample, so what you validate is your fabric, your trims and your workshop, not the patternmaking.

With the sample approved, build the tech pack (technical spec sheet) for each style: pattern and sizes, fabric with composition and width, trims, finished measurements by size, consumption per garment and finishing. It is what you hand to the workshop or contractor and what avoids arguments when the batch comes back.

Prioritize by margin and sales velocity

For each style, calculate two numbers: margin (selling price minus total cost, including fabric, trims, cutting, sewing, finishing and waste) and sales velocity (units sold per week or per month). As a rough guide, the wholesale price usually sits between 1.5 and 2 times the total cost, and the retail price at around double the wholesale; each brand adjusts it to its channel and positioning.

Cross the two: good margin and high velocity gets produced in depth and in the full size range; high velocity with low margin is kept because it brings in customers, without overstocking; margin without velocity is produced in small quantities as a statement piece; and no margin and no velocity gets discontinued, even if it is the designer's favorite. That way the second run is decided with data.

Sales channels and how they change production

Each channel requires different stock and a different size range, so decide the channel before cutting the first run: it changes depth per size, price and even which styles you choose.

Many brands combine channels: they start on Instagram with a short size range and pre-orders, validate what sells, and use that data to build the wholesale pack or the online store stock. Base patterns make that possible without redoing anything: the same t-shirt sold by the unit is produced in depth with the same file and the same marker.

Wholesale: sold by size run or pack (for example S, M, L and XL), in volume and at a lower unit margin; it requires stable stock and prices for each season.
Instagram and WhatsApp: sold by the unit with photos of the sample and pre-orders; lets you start with a short size range and restock to order, in exchange for more customer attention and shipping.
Fairs and showrooms: need physical stock and high-impact pieces; they work for clearing the leftover sizes at the ends of a size run and testing new styles.
Online store and marketplaces: real stock per size, a size chart in centimeters taken from the pattern and a clear exchange policy, because size is the main cause of returns.

From idea to sale in eight steps

A working order for a capsule, from idea to sale, that keeps you from cutting fabric before price, channel and sample are settled.

Define your audience, main channel and target price per garment.
Choose 3 to 6 base patterns with the size range for that audience.
Derive 8 to 15 styles through variants of fabric, color, length and detail, in 3 to 5 colors.
Buy fabrics and trims, run the shrinkage test and make one sample per base in the real fabric.
Cost each style from the sample and set wholesale and retail prices.
Decide size range and quantities per style: full for basics, short for riskier pieces.
Cut and sew the first run with a tech pack for each style.
Measure margin and sales velocity over the first weeks and use that to decide restocking and the next capsule.

Frequently asked questions

How many styles should a first clothing collection have?

Between 8 and 15 styles is a manageable range (a rough guide) for a first collection or capsule: enough to put together outfits and a storefront display without scattering capital on fabric and stock. The most efficient way is to derive them from 3 to 6 base patterns with variants of fabric, color, length and detail, in a palette of 3 to 5 colors.

Do I need a different pattern for every style?

No. A base pattern with a proven fit gives you several styles by changing the fabric within the same family, the color, length, neckline, pockets or print. You only need a new pattern when the silhouette or the fabric family changes, for example from knit to woven. That way you cut down on samples, markers and tech packs, and the fit stays consistent across the whole line.

Should I produce every size from the first run?

For basics, yes, because a missing size is a lost sale and a lost returning customer. For statement or higher-risk pieces you can start with a short size range (S to XL) and extend it if they sell. Since the digital pattern includes the full size range, extending it has no patternmaking cost, only fabric and stock.

How many units should I produce per style to start?

It depends on the channel. For selling through Instagram or your own store, one or two short size runs per style and color (roughly 6 to 12 units) let you validate before investing; for wholesale you produce in packs by size run and the minimum is set by the volume the customer buys. Restock according to real sales velocity instead of cutting deep from the start.

What do I do with styles that do not sell?

First rule out the easy fixes: photo, price, a wrongly stated size or no stock in the middle size. If it still does not sell, do not restock it; clear it in bundles or at fairs to recover capital, and note the lesson for the next capsule. A collection improves by removing what does not sell, not by adding styles.

Can I sell clothing made with purchased digital patterns?

Yes. The license for Modeltex patterns is for production use: you can manufacture and sell the garments with no limit on units or channels. What is not allowed is reselling, sharing or redistributing the pattern files. Each pattern includes the full size range in a single purchase.

More guides

Sewing patterns ready for production, with the full size range, in the Modeltex catalog.