Yeah I do the same thing with cans but get yourself one of the Tamiya paint stands with the springs to go inside the body. It makes it so easy to hold the body upside down . I cant remember how many times I have dropped a body shell off a can. Also get some small crocodile grips for the smaller bits hope this helps in some way. This Caddi is done with a can before wet flatting and polishing. The top pic is close up of the front Fender