Drawing a fan art of Dexter from Cartoon Network's Dexter's Laboratory

Here is my work in progress and finished drawing of Dexter.

The first step is I draw using basic lines using the pencil tool in Adobe Illustrator.

Then, I normally finish it with various thickness of my line art, and then coloring it.

Here is the final render of my work.

I also uploaded this on my Behance portfolio:

https://www.behance.net/gallery/29922117/Dexter