I just trimmed down a Post it note (one sheet) and it works fine. mainly just to guide. I don't sew fast. I check every couple inches to make sure everything is at the 1/4" seam. Also if you have any kind of adhesive residue a good remover is "GOO BE GONE". A little on a Q-Tip or tiny piece of cloth works great. Then just buff with a tiny soft scrap of material and you're good to go.