Pepakura attempt-fail!

Okay so i was getting frustrated with trying get my triangles flat for laser cutting-sketch up doesnt have an align tol, and rotating is very fiddly!
I tried Ruwans suggestion of Papakura but im not too sure how is meant to work
This is what a simple area folded out to be:


I have no idea how im suppose to fold the lines?

Back to working out another way for me to get my triangles for a physical model by thursday EP.