What I normally do is find an avatar related to a band I like...
Or just some weird looking creature thing
And resize it to avatar size (105 x 105 I believe is the biggest)... If you don't know how to do that and you have some image you want resized, I could do it for ye...
The avatar I have now is some drawing like thing of Trent Reznor from Nine Inch Nails
But other than that, I suck at picking anything
Actually, I probably just suck at picking things period...