Best advise I can give on this is Youtube and google are your best friend, done some minor paint repairs myself after doing about 4-5 hours of studying and watching video's, I watched everything from fixing holes in boat's using fibre glass, filler and primer, to repairs motorcycle fairing, and you really do pick up alot of knowledge!
Just patience and alot of focus and you will be fine, if it goes wrong dont panic, you can always sand it down and start again Its really one of them that experience really is what makes you good at it, so you just have to get on with it really and learn from mistake's
It will be interesting to see your work too so be sure to get some piccies up