Why I Started with The Basic Pattern Set Before Seamly2D (And Why You Should Too)

Something happened yesterday that made me realize I need to share this more clearly.

Someone commented on my post saying she wanted to learn pattern adapting but didn’t understand the fundamentals. I recommended The Basic Pattern Set, and she bought it.

Then she said something that clicked for me:

“I’m just guessing based on limited experience.”

That’s the gap.

Here’s What I’m Learning About Seamly2D

I’m a week into learning Seamly2D now, drafting blocks digitally.

And here’s the truth: The software is just a tool. You still need to understand what you’re building.

When I drafted The Basic Pattern Set blocks in Seamly2D, it was straightforward. Almost intuitive.

Why?

Because the instructions in the book already simplified the drafting logic:

• Clear measurement relationships

• Alphabetical point labeling (A, B, C...)

• Sequential construction order

• Formula-based calculations

Seamly2D just executed what the book already taught me to understand.

Then I Tried a Different Method

Now I’m drafting pants using different instructions—numbered points instead of letters, different construction logic.

And it’s harder.

Not because Seamly2D is difficult, but because I have to translate between two different systems:

• The instruction’s numbering (1, 2, 3...)

• Seamly2D’s letter requirement (A1, A2, A3...)

It’s teaching me something important: The tool is only as good as your understanding of what you’re trying to create.

What This Means If You Want to Learn Seamly2D

You have two options:

Option 1: Learn pattern drafting AND software simultaneously

• You’re learning two things at once

• Every friction point compounds

• You don’t know if the problem is your understanding or the software

Option 2: Learn pattern principles first, then apply them digitally

• You understand WHAT you’re building

• The software becomes an execution tool, not a mystery

• When something doesn’t work, you can diagnose why

I accidentally did Option 2 by writing The Basic Pattern Set before discovering Seamly2D.

That’s why drafting those blocks digitally was smooth; I already understood the logic.

The Foundation You Actually Need

The Basic Pattern Set teaches:

• How to take accurate measurements

• How blocks are constructed (and why in that order)

• What formulas do (not just which ones to use)

• Where darts go and why they’re there

• How ease works and when to add it

These principles don’t change whether you’re drafting on paper or digitally.

Paper or digital = execution method

Understanding the logic = the actual skill

Once you have that foundation, Seamly2D becomes powerful. You’re telling the software what to do because you understand what needs to happen.

Without it, you’re copying steps you don’t understand.

My Recommendation

If you’re serious about learning Seamly2D:

Start here: The Basic Pattern Set

Draft the blocks on paper first (or follow along digitally if you already have Seamly2D).

Why?

• The instructions are designed to be clear and repeatable

• Alphabetical labeling matches Seamly2D’s system

• You’ll understand WHY each line goes where it does

• When you transition to digital, you’ll know what you’re building

Then: Apply that knowledge in Seamly2D

Use the formulas you learned. Input the measurements. Watch the pattern adjust parametrically.

Now the software makes sense because you understand the underlying logic.

What Happened After She Bought the Book

That commenter? She’s a professional theater costume seamstress.

Skilled, experienced, technically proficient.

But she said: “I’m just guessing based on limited experience.”

That’s not a skills problem. That’s a knowledge gap.

She can sew beautifully. She just didn’t understand pattern construction principles.

The Basic Pattern Set fills that gap.

And once she has those foundations, everything else—adapting commercial patterns, fitting muslins, eventually using Seamly2D—will make sense.

The Honest Truth

I’m not saying this because I want to sell books (though obviously I appreciate every purchase that supports this work).

I’m saying it because I’m learning Seamly2D right now, and I’m grateful I understood pattern drafting first.

It’s the difference between:

• “Why won’t this work?”

• “Oh, I need to adjust the formula because this relationship changed”

One is frustration. The other is problem-solving.

If You’re Ready

The Basic Pattern Set is available here:

Current price: $12 PDF / $9.99 Amazon

What’s coming: I’m updating it with blocks that include ease and alternative methods. When the update launches, the price doubles. If you buy now, you get the update free.

What you’ll learn:

• Basic bodice block

• Basic skirt block

• Basic sleeve block

• Off-shoulder blouse

• Princess blouse

• How to take measurements

• How ease works

• Why darts go where they do

Simple, repeatable methods. Clear instructions. The foundation for everything else.

Then, when you’re ready for Seamly2D, you’ll have the knowledge to make it work for you.

What About You?

Are you learning Seamly2D? Have you tried jumping straight to digital without the foundational knowledge?

Or did you learn pattern drafting first and find the transition to software easier?

I’m curious about your experience.

Reply and let me know, your insights shape what I teach next.

Kehinde Oni
Pattern Maker | The Sewing Lounge

P.S. If you’re already using The Basic Pattern Set and want to learn Seamly2D, I’m documenting my learning journey publicly. Real-time notes, friction points, workarounds. You’ll see it all as I figure it out.