No need to apologize man, that is why we post our projects here, to share but also to learn from others! I like to use the regular cheap lacquer thinner to thin my fingernail polish, seems to work well for me. I always advice people to play with the mixture vs the air when using this type of medium so, it's always good to have a few spare parts primed before shooting your paint on your project. Make sure to use a good primer to protect your plastic. Currently, I am using Krylon but you can also try Plasti-Kote or Dupli-Color primers.
The color I am using for this project is a pretty dark purple I purchased at Wal-Mart. It's called, Buffy the Violet Slayer I will post pictures later, I just hope you can see the "purple" in it, for some reason, the purples always seem to come out blue when the photos are taken.
You are correct, decals do not get along with flat surfaces, that's why I am spraying at least 3 coats of clear first, wetsanding them, adding my decals and then finishing off with at least another 4 coats of clear. I will then wetsand my last clearcoats again and finish off with a nice, smooth polishing and waxing!