If there was the same question, I would really appreciate if you could share the post / answer.

I'm not experienced and trying to apply the program to my needs. I have created 2d simple garment construction (trousers) and changed avatar basic measurements (waist and hips only) to see if I can use my client measurements and check fitting. But somehow in the end it appeared that avatar has bigger waist measurement than should be according to the garment and when simulating the garment fits perfectly even seems bigger, but in fact in 2d construction it is much smaller. Fabric that I applied is muslim. What am I doing wrong? Really want to understand how to fit correctly