Our stay? Shouldn't it be 'your' 0:

Ah, what above comment said, although I'm sure it was a typo!

It's a very nice banner! Very sleek, very in-tune with Weasyl's colour scheme too; it'd fit right in!

The character on the left is very well drawn! The way the hair and eyes have been created is wonderful! The anatomy looks fine to me; I've no issues there. The shading and lighting is very smooth, soft, appealing. The same can be said with the character on the right. Great drawing, good display of perspective (the lower jaw being mostly hidden by how that character is 'looking' out at the viewer.

The background is what connects this banner to Weasyl's colour scheme! The purples and blues marry up wonderfully to Weasyl's background. One thing I might suggest (although not as an imperative change, perhaps more of a try-out for this idea) is to have a sequence of those line art drawings in the background? So, for example, that character in a 'running' sequence? Or perhaps more sitting poses? Just something to further show off your talent! After all (and forgive me if I've presumed wrong), the banner is the attention-grabber when someone visits your page. Show off your skill!

As it is right now, I think it's a great piece of artwork and a great banner. Helps me as a newbie to see what a banner should be! You've done a lovely job. :) Try out my suggestion if you'd like; I'd love to see what you come up with! Good luck!