So, there's this art-swap event over on deviantArt called Angelcrusher's Fight League (or just AFL), which is a battle royale between artists' original characters. More info about it can be found here: AngelCrusher's Fight League - AFL3
The event starts next month, but the entry requirements include making a character reference sheet (since other people will be drawing your character), and a drawing of your character receiving an invite to the league.
The guy I'm using is a superhero character I've had for a while, called Nightstick - Master of Blunt Weaponry! Here's the reference sheet I made for him, and below that is his "Invitation" piece: