Line Art/Vector Artist Wanted for coloring and activity book

I'm looking for someone to create a coloring book like this one:

http://www.deltadentalmi.com/MediaL...-Teeth-with-the-Tooth-Fairy-Coloring-Book.pdf

I will design the front and back cover, you just need to provide the coloring pages. If you can do this (legally, must be your creative work, not used from another source), please contact me. 10-15 pages of coloring and activities. Pages need to be 8.5x11.

How long will it take? What will the cost be?