$1-4: clean lines
5-7 : clean lines and markings in color
8-10: fully colored with a simple background
11-15: fully colored with a background that is xmas themed
16-20: fully colored shaded and a background

example of clean lines: http://www.furaffinity.net/view/15244756/
example of clean lines with markings in color: ((NSFW)) http://www.furaffinity.net/view/17007947/
example of fully colored with simple background: http://www.furaffinity.net/view/18209239/
examples of shading: ((NSFW)) http://www.furaffinity.net/view/17495118/

please comment or note to claim!
can be ANY SPECIES and male or female options are fine!

example of this done:
http://www.furaffinity.net/view/15135773/