I just started getting into making these a week ago! I'm still a beginner learning n.n The white spots on some of the charms are NOT chipped paint, it's just dried clay that can be wiped off!
I'm using crayola air dry clay. I finally went to Michael's and I simply can't afford polymer clay right now with the small amount you get! -.- I've had no problems with the clay I use, and I'm happy with it. For gloss I've been using clear nail polish!
The tutorial for the apple will be posted in a few days!