Man I love it, you have done a great job here for a solo project. I like how you kept it clean and somewhat simple on the art, it works to the benefit. And the wood floor (the cabin from evil dead 2?) just looks plain great. If I were talented with a brush I would make something much like this pin but I'd make it in a Left 4 Dead theme, myself being a big pc gamer for many years and that being such a great property it would translate well to a pinball machine.
Anyways, I hope you are sharing this on some other sites as well. Lots of people can paint/draw etc etc, but can they remove a pinball playfield completely and refinish the artwork and then put it all back together again? That is good work there.
*edit* just some quick comments after looking at first pic, clearcoat looks awesome! I would get new flipper bats (cheap and it deserves it) maybe even gold or silver (silver would be my vote) custom ones, would look bad ass! Also maybe consider white rubbers, they would contrast really well and look superb on that pin.