I just used my mouse pad during my break today to get them signed and it held it pretty good, but I also think it depends on the pen you are using. If a pigma pen would not be firm enough, but I was using one of my scrapbooking pens that has a wider point on it. Waiting for Sharon's address so I can mail them out. It took longer to sign them than it did to make them. Guess I am a slow writer but a fast stitcher.