Classification - sketch illustration
As for critique - it really depends on where you want to hone your skills.
Are you looking to stay in the more Cartoonist style, then I would just suggest.. keep practicing. Clean up your edges, and pay attention to what your character is trying to say with the expression and pose.
If you are going for Realism, then I would suggest - practice with actual photos... for Both, its important to know where the proportions are, event though for cartooning and/or caricatures the sizes of the features may be skewed - the relationship from one feature to the others are in sync and balanced. There are some really great books out there for artists that has photos of models faces, heads and expressions that are great to practice from... I will try to look it up and give you the title... but in the meantime.. I just started a scrapbook.. and clipped photos of people in magazines or newspapers.. or I took pictures of people that I could use to practice later...
I hope that helps.. I am not sure if that was what you are looking for or not.. but I hope so.
May your world be painted in the
Brightest of colors!
**Artist / Illustrator**