If you've ever tried to sew vinyl or plastic, you've discovered that the metal presser foot on your sewing machine STICKS to it like nobody's business.
What can you do? The solution is simple: just put a piece of tape over the bottom of the presser foot. Really, that's it. I used an xacto knife to cut out the bit where the needle and thread go through. When you're done sewing the vinyl, just peel off the tape. Ta da!
I used this technique to sew a vinyl dress
and to add a pocket to the inside cover of a small notebook