You'll never know how good you can be and how fun it can be to do FMQ if you don't try! In addition to the suggestions above, you can also make doll blankets, pads for animal shelters to practice. When I started out, I used thread that matched the back and busy prints to hide my mistakes. I found what looked best (loops/swirls) and perfected those before moving on. It too forever before I could do a decent stipple. Now my stippling looks great. I find FMQ very liberating and using the walking foot seems more like a chore to me.
Keep one of your early practice sandwiches so you can compare it later. Biggest advice is to relax and have fun!