How do you get to Carnegie Hall? Practice!
In this case good paint will help you too.
One think that I didn't see mentioned is the comfort level of your gun. Is it comfortable for you to handle, and to shoulder? If not, ask people what they like, and try new things till you get it right. Don't spend money on silly "performance" upgrades, most of them don't do a dang thing. That said, an upgrade that will make your gun more comfortable for you to use is not a waste at all, IMO.
Good luck, and have fun!