I don't know enough to volunteer how to make them, and I was having a bit of trouble myself at first.
What I was doing wrong was my lines were too "fat". I was using a marker, and when I measured it the lines were 1/16 inch thick! So, it was making my templates off by 1/8, which you know could be a mess when compounded!
So, I started using a lead pencil. Real thin lines, and it worked great.
BTW, so glad we've started! Everything is great!