20th Anniversary T-Shirt Design Contest

[Constantine Shulyupin]

Hi,

I am designing image  for annual Linux.com Store T-shirt design
contest: http://www.linux.com/tshirt-design-contest

The draft of the image is here: http://www.makelinux.net/art/20y/

Can you please give me your feedback to improve the image?
Please note, I am not professional graphics designer. It is just hobby.

Thanks

-- 
Constantine Shulyupin
http://www.MakeLinux.co.il/
Embedded Linux Systems,
Device Drivers, TI DaVinci