I don't think folks are listening to Ukyo very well. THe CP needs to be completely sanded, down to a bare metal look like our friend zerminator here, it needs to look nice when sanded in order to get a nice finish on the paint.
Spray paint reproduces the slightest mark faithfully, so in order to have no marks the best thing to do is to sand everything throughly. Also primer is of the highest importance when it comes to paint to have a nice thick lasting finish.
I like Rust-Oleum 'cause it stops rust and I believe these MVS cp's are made out of a very cheap steel that has more iron I care to think of, thus rust comes back easily. The best primer I have found for common folk like us is the Rust Oleum stop rust white primer, the Brown primer is also great if you have tons of rust, and If you're not sure then you haven't sand enough.
When painting remember you can allways coat again, but is hard to take paint off, so don;t be way too generous with your coats, is better to have lots of light coats than fewer heavy coats as the excess turns to powder and looks dull. Semi-Gloss is the only way to fly for me, I like the look of it, all my MVS cabs have being painted this way and for the most part all the MVS cabs I have restored have gotten the same treatment.
When it comes to overlays; all the artwork is ready to print all you need to do is click below my sig and it will take you to Neo Geo MVS which is hosted by a mamber of the same name, he's kind enough to host a few things for me, so if you use this files don't thank me, thank him for taking the time, as I can't be bothered emailing files day in and day out.
This files can easily be porinted at Kinko's, you're best bet is to have them printed in a heavy stock paper, gloss is not necessary as the plexi that you will covered the artwork with will provide a nice glossy look, in other words is allways gonna look like new.
Busted highlited a post I made of the 3 specific materials available in any home depot or lowes for clear overlay material, if you're not sure of what you want to do simply go in there and check it out. My suggestion to everyone new to this is to use Lexan. Lexan is the most expensive choice out of the 3, but it's easy to cut and allows for cheap drill bits to do a nice finish and cheap saws to do a nice cut, so keep this in mind as well.
OK, I think that covers it all pretty nicely, so have fun nancies!