Besides regular Pokemon there's plenty of oddly-colored and rare versions of Pokemon too-and they're not JUST shinies. Also a few Fakemon sprited from scratch, besides me we also have a team of a few other artists helping out on the site. As of now we don't have any need of staff but that may change in the future as the site grows. Because it's more or less a fansite however, staff are by volunteer and do not get paid. They do however get occasional perks.
I'd want to be a competitor. I noticed that some trainer cards have 3 Pokemon while others have 6. So to be a competitor I'd need to use the one that has 6?
Competitors are the ones with six Pokemon, but you actually can't apply to be a competitor anymore, they closed that a long time ago. You'd have to be a spectator, and spectators only get three Pokemon.
No idea but it's entering it's seventh round. And no, usually spectators can't enter the competition even during new rounds. It's a process of elimination anyways so whoever loses a previous round cannot come back and end up becoming spectators.
Go to your Club Management, open the Club Page panel, and it should be there under Club Banner. You have to use an image link you uploaded on Photobucket.