I loved how the points were all accurate! Triangles have always been a curse for me to piece traditionally, since I always get a little wonky when it involves bias stretch. I'll definitely NOT give up on it.... I have a little stubborn streak that refuses to be beaten by a piece of fabric!
I'll see if I can track down that book. I think you are right. Maybe if I start over at the beginning and at a nice slow pace I'll get better results.
The instructor kept promoting freezer paper since the waxy finish held the fabric still. Does it shift a lot when you use regular paper, or stay fairly still (since it would get iron-pressed between stitching?