Paint is the easiest part in my opinion. I've painted at least 20 cars...I know it's not a lot, but remember I'm only 21. Anyways, from what I've learned and most pros will tell you is 90% of the work in painting a car is prep. Making sure everything is perfect, making sure its all wiped down and cleaned thoroughly...Stuff like that. Spraying is the fun part, because it's so easy after you get used to it and it goes quick. Color sanding and final polish are a pain in the ass, but still easy. It's all about taking your time and not cutting corners. Rabbit can elaborate on a lot more than I can since he's painted high-end sports cars and such for a while.