I couldn’t say I’m all that confident right now. I think the exciting thing about this hobby is that there is always new things to learn ^_^
I think after i made my 20th outfit (not just Cosplay but clothing for everyday wear too) I felt really good. I find sewing things you’d wear everyday really helps to teach you how to sew cleanly and fit clothes properly.
I think it’s less about drawing than understanding how things come together. Be patient and remember that sewing isn’t learnt over night. You are trying to cover a 3D object with a 2D object. It’s a special skill.
Hope you enjoy your projects and good luck!