I would use the pins with flat ends,but you might want to use pin more. They are sm pieces of spongy silicone made for quilters who need to pin their quilts for stitching by hand or machine.They work wonders. You put the needle through the needle and stick the sm piece on the end.When you pull the needle they self seal so you never have to replace them. A lady invented them because she has hand problems and couldnt use a safety pin to attach the three layers together.You can now see them in some quilting books.Nancy Notions sells them.