I used to have a picture tute of how to make the fold on a binding on different angles,,,I do fine on the regular quilts, but cant figure out how to miter the corners on angles on placemats and such ...can anyone guide me???

There's a whole section of tutorials here that you can access from the Main page. Here's a link to binding angles.

http://www.quiltingboard.com/posts/list/1395.page