nice job. bondo is amazing. i had rust on my car in the rear wheel wells, similar to yours. we actually partially molded a fender out of it. there was about 3 inches missing, and we applyed the bondo straight down, let it dry partially, then folded it up, and let it harden...it worked amazing, and after some sanding you cant even tell. some of the rust is coming back, so i might have to do alittle more work. i still have to get mine painted, but i hope it looks as good as yours.