If you stick with the stamp idea, get a well made stamp. I have a custom one from Sweet Paperie (Papery?) on Etsy. I had to trim a tiny bit of rubber on one corner that was leaving an extra impression. You have to get a high quality stamp pad as well. I use Palette ink. It can be hard to find in stores, but it's worth it to order it online. When stamping, do not rock the stamp. This frequently leaves shadows around the edges. You have to press straight down evenly, and lift straight up.