It's not more more specific than what we see in request forms.
- Render. People supply that all the time.
- Size, again, people ask for specific sizes or to stick *about* a certain size range. Take Mimi for example, I've seen her request a certain size (or below) so she can have stuff under her sig.
- Theme. Dark. We've seen this before too.
Other than the position of the render, and the 3 letters. I don't see this as too far out of the ordinary from regular requests. Even people sometimes supply guild emblems and whatnot that they want somewhere in the sig. That's not farfetched. Plus, the render wouldn't look bad coming from the position he wants, just because of it's flow and shape. Chances are, siggy makers would have put it around that area anyway, or the opposite side.
I don't play Shaiya or any Aeria Game anymore, or I'd try my hand at this one.