the head is way too small. Coloring is good, I like the clothes ^^

Yep, teensy head. Which is a shame 'cause otherwise he'd be hot. Chesty, yum.

It's manga, people.

Distortion and exageration (whether smaller or larger) is part of the style.

The jacket looks great - it looks like you enjoyed doing it.

no no, even in manga you don't see that kind of distrotion unless it's SD

Very good MayYeo, I don't see any incongruence.
Cool.

The head isn't particularly incongruent with the body, but his body lacks a bit of definition. Perhaps if you brought the musculature out a little bit, it might move the focus away from the detail of the head. Just a thought. Otherwise, excellent pic. Love the coat.

I don't understand the thing about the head. What "teensy" mean? Related to "teens"? Uh, well. Maybe I should add more contrast to the chest. Thanks for comments!

teensy means small

yes, is little smaller but not so important!
My eyes are capturing by his breast!!!!!! soooo hot!

cool work ale!

ahhh.... hey. i think propotion of your character work here has no flaws.
nicely stylized, and you successfully added very classic girl-comic/manga feel. i can assure you that there are huge industry of girl-romance comic in china, japan, and korea, and the style you have going here fits well in that world. i actually definition on his chest works well too. you never have to try making your work look like other artist here on gfx only beacuse they force you to follow their standard. good work!

Good textures on the jeans/jacket
Maybe a bit more colour and little more shadow on the skin would be nice, just a suggestion ^^)