Character: Head

I have begun creating my character in illustrator for the front of my box. After creating some concept drawings I scanned these on to my computer then placed them inside my illustrator template before saving it as my box front. Using the drawing as a guide I have been replicating the squirrel character using the pen tool. At it's current stage the squirrel doesn't have any colour or detail, but I am first trying to outline him.

Left: Sketch
Right: Illustrator