The white background is Massassi default, and for some better shots on another background, go to Blood_Asp's Editor's Corner on Massassi (
http://www.massassi.net/ec/view.php3?user_id=5390&type=i&DateToView=09/29/2003). He took some great shots of it for me during beta.
And I'll certainly take your comments into consideration, in fact, I'm pleased to hear those things, I can actually improve upon it now.
But I must say, most of it is kept simplistic because, well, it doesn't need that much detailed brushes (to me), it's merely the mood I try to achieve with it. I will improve it though, don't worry.