Well, just remember these contests are to provide a player created armor/attire to the game or just showing off your skills, so better breakdown on the smaller bits or aesthetics where it may not be clear is always useful.

Nickname can be forum name, personal name, or whatever that might let people recognize that its you. Your character name and world name or for reward delivery and will not be posted on the showcase.

Comment can be whatever you want, a quip about the concept, maybe just saying hi to the judges, lol.