Professor and High Wizard (Hint of Yaoi)

This is my most recent drawing ... I thought it up, or rather it appeared in my head during an early morning lecture, when I was half asleep. It's one of my best so far, considering the fact that I bothered to shade ^^; I'm not sure if the other pictures I drew weeks ago will live up to this picture's "starting standard" hehee.<br />
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anyways, it's my first submission here ... I know there are places where I should improve, and I would refine it further, but I was pretty much losing patience, so I am uploading this. Please give me some constructive critiques !