This is pretty good my amigo, reminds me of someone I know actually, keep it up!

That is Ken isn't it? Is the white outline cloud in front of his face his fist? It sands out a bit....
For a challenge, try my usericon, Asterix (French comic book character) The nose and eyes are kinda hard to pull off, even though it's got simple lines.
I like the composition of the face, it has a unique personality that just gels with me.

yea dont overwork urself. otherwise it looks nice kinda like ken.