What I've found is that it's like most things, confusing at first, then not so much.
My first was a free teddy bear pattern. About 20 pieces and took forever ( it seemed ) because I thought about every step 20 times before I cut a piece.
Still screwed it up but that process made the steps clear in my head.
After that it's just making sure you cut on your intended line.
Intarsia92 does great work and is very helpful.
Randy