Here is possibly the intro picture of a man (not finished yet)
What do you think ?
I know that body is not perfect at all.. i must repair it
(http://www.joker.si/mn3njalnik/uploads//post-1041-1130854346.jpg)
* his chest looks too.... female
* stomach area is far too tall, reduce it's height by 30% or so
* Where are the hands?! :o
* area around neck & shoulders looks a bit weird, there's much to improve here
* The pants' shading is cool in it's own way, but not realistic. You can shade human arm closeup this way and get superrealistic result. But not cloth. It looks like green skin with veins! to do: reduce number of wrinkles, make them much larger and don't use so intensive shading -> use less colors and smaller color range
Everything else looks quite okay and I love the style! Make him real hands and head too! 10 points for skin color.
(http://www.increator.pri.ee/i/critshelp/aoe2.png)
This is an image from Art Of Fighting 2 to help you:
Notice how pants are shaded and how muscles are drawn. Maybe it helps a bit.
As it's still incomplete, I won't critise it. I guess the main problem here is you're drawing without planning. Start from a sketch: http://www.polykarbon.com/tutorials/body/male/stick.htm.
Look it up: http://www.polykarbon.com/tutorials/index.htm
The proportions aren't quite right.
Look down at yourself, e.g. the elbows are at bellybutton level, and the wrists at crotch level.
And the chest muscles aren't below the shoulders, instead they rather blend into them.
I'm glad you made a man IN pants and not without. ;)
The shading is superb but his stance seem a bit weird; like he's dancing two-step or something!