101 Dalmations Member
Ok, so in order to aid as much as possible; Please understand that I'm not the best at mincing my words.
So I'll break my crit down into sections.
The Anatomy and Proportion...The sucky stuff.
His bodily proportion is fine, I can't detect any problems with it really. One might argue that the forehead is huge based on the size of the hat but clothing is to be covered later.
The anatomy though, needs work. The first thing is that torsos -even the male torso- is not that straight. I like to think of a bean shape when getting the basic structure for it down. Shoulders don't tend to come out at right angles, again even on males. Try to slant them even if only slightly. With the arms, pay attention to the individual sections. The main areas of the arm to indicate are the deltoid, bicep and tricep, forearm and wrist. Try not to draw the arm as two tubes connected by the elbow. Some one recommended posemaniacs.com above me, I second that when it comes to learning the anatomy.
The most important thing for you to take away from this section really is that the human body doesn't have very many straight lines or right angles. Things are more curved in the natural form.
First thing is, the design itself is pretty cool. What it lacks is folds. All cloth folds as it hangs over the body. You need to try and indicate those folds to give the body more form. It will really help making things look 3D as well. And that brings me nicely to the other point about clothes; Try to remember that they are worn on top of the body and as such it should look and feel as though there is a body underneath, they don't just 'pin on'.
It's great that you've experimented with this. I never used to do this sorta thing and still try to avoid it now where possible. It's not easy stuff. Saying that, I think you've handled it pretty well. The arm really does look like its coming toward the viewer. The issue is the way you've drawn the hand and the..sword I believe it is. Things get really confusing after the hand and it's difficult to see what things are. Don't be afraid to use reference if you're not sure how things should look. You can even use your own body as reference if you look in the mirror or take a picture.
There isn't a lot that can be said about this because it's just a single character. But from the caption or title underneath I can only assume that the page is some sort of cover page or something similar. In which case I'd have dramatized the pose a little. Get the shoulders moving in the opposite direction to the hips is the easy way of making things more dynamic. The foreshortening does help to add interest though so it's great you included that. His expression could be a little less 'plain' to make things more interesting. And the last thing to note is about the balance, he seems to be falling over to one side; be careful when drawing that the character is well balanced (unless they are falling!) Easy trick for this is if you can draw a line straight down from the nose neatly in between both legs then the character is in perfect balance.
Hands and Feet
The foreshortened hand is confusing but you did a great job on the other hand. The feet however, Again I suggest looking at references.
Here's a quick deally to help you out. I apologize because I can't draw for shit with my mouse.