Looks great so far. Hah! I usually leave the face for last too. :P
Here is a coloring technique I've been playing around with lately. Seems to lend itself well to both cartoony and more realistic styles of coloring. You need some mildly deep knowledge of photoshop to use it, but so far I've found it very much worth the extra setup time.
http://yuni.deviantart.com/art/Color...nique-61468467
Might be something to look into for your next image.