Ah ok.Perhaps you should send it to Bethesda anyway maybe they´ll credit you for it..in the world of Fallout3 and New Vegas,what you drew/painted would actually be a really cool idea (he resembles a "Raider" AND a "Ghoul" from that world) and I don´t think they ever used it(that certain combination,which REALLY would be spooky as hell)in the games...well,whoknows
Cause otherwise Bethesda let themselves inspire by your artwork..