I've created a lot of fanart based on Roswell over the years, for other websites,
fans, contests, and for myself and the site.
I've had a lot of people asking about this lately.
Yes, I do take fanart requests - banners of all sizes, blinkies, and AVIs
The time to completion depends on how busy I am at the time, but contact me with your request and I can give you a better estimate.