HP: No! Not more Marauders! MWAHAHA by @DarkRaptor (Carly Wietzman)

Okay...this is a start of a project where i upload my base sketch..and do the pic in colored pencils and another copy all cg. Well here is the Marauders from Harry Potter. We have Moony on the left, wormtail at the bottom, Padfoot at right, and Prongs above. I believe they are all looking at Prongs(James Potter) who is about to make a very important decision. Padfoot(Sirius Black) is restless, Moony(Remus Lupin) is calm and wolfy instinct. Wormtail(Stinking Peter Pettigrew) is twitchy and hero-worshiping. There. Ahh...suggestions on background, colorings, and anything else please.