Seems like a pretty swell contest, really. Importantly, Valve don’t own the artwork you submit either. “By submitting an entry you give us non-exclusive license for the artwork to use in CS:GO,” they explain. “You keep the rights. Past artists have licensed their successful CS:GO artwork elsewhere.” You’ll just need to have a Steam account that’s purchased at least $5 of anything, document your artistic process a little bit, and note the winnings split between you and any collaborators you work with. Valve say that the CS:GO development team will choose the ten winners each receiving $100,000.