How about a Twitter background conceived with designers in mind? This Twitter background is not just eye candy, it helps you actually showcase your work and point your clients and partners to your other social media profiles.
Feel free to play around with the elements until you find something that will suit your needs. The file makes use of Smart Objects so customizing the background with your own images is simply a matter of drag & drop.
The font used is ITC Bradley Hand
http://www.fonts.com/findfonts/detail.htm?pid=204048
Social Media Icons
http://www.komodomedia.com/blog/2009/06/social-network-icon-pack/
The photos used in the preview are courtesy of http://horoabe.blogspot.com/ (not included for download)
Enjoy 
Alina