Il think youll do just fine. You are already way too picky as is! lol
Id suggest starting a thread on here asking how many people would be interested in this and how much theyd be willing to spend or put your own prices down or whatever. Maybe do 1 or 2 to show what you can do on a small scale. If you are getting a few to buy your big peices im sure you could get a lot more to buy your less expensive small works. Im surprised you havent been approached by any of the major card companies to do artwork cards for random pack insertions. This Avengers set i collect had 50 original drawings that they inserted randomly into packs that were very cool!
Sean