Alrighty, the tentative sign-up form would, at the moment, be:
Name: (Including nicknames)
Gender: (Male or Female obviously)
Appearance: (A picture will do obviously, although if your adoptive has any special features that aren't included in it then please list them in writing)
Personality: (So many people do so many things so horribly wrong with this field. Please, let's see at least two lines of fluent text, alright?)
History (Optional): (Just to add a little backstory to your character if you like. Be creative but don't overdo it. ^^)
Attacks: (Can obviously change during the course of the RP as you char levels up, but try to at least inform me when they do.)
Other (Optional): (If there's anything you didn't get to express in the other fields then feel free to put it here.)
RP Sample: (Yes, I'll require one from everyone, including myself. It doesn't have to be a novell but try to make it at least reasonably long. Samples from any RPs you already are/have been in are accepted, but please provide a link to the source in such cases.)
Most of this information can be taken from the sheets that you already have, so please do a proper job on the rest. ^^