What kind of 'professional' look are you wanting? Illustration? Comic strip? Animation?

About lighting - your shadowing is way too flat. Try turning Ambient Occlusion ON in your renderings. 3d made images without depth almost defeat the purpose of doing it in 3D.

I'm going to be brutally realistic here.... The image has good development potential, but it has quite ways to go before it's at a professional level (That of a trained artist in any medium)

Feel free to join us in the critique forum, where you can learn on your own and other people's critiques.

things to look at here...  Camera perspective - it's distorting image
Lighting and shadows (others commented on a fair amount here)
Textures - in general, there are several textures out of their realistic scale, for example: carpet, wall
Scene composition - your figure is competing for attention with vertical elements of the wall. Instead of focusing on the figure, the viewer starts wondering what's going on with the backgrouns... is that a wall, or a part of the hallway, hard to tell.
Figure position to the camera... I have a sneaky suspicion that the left hand gesture is part of the story here, but we don't see it. It almost looks like the actor is missing the left arm. This ambiguous character orientation to the camera should be avoided. (Again, it detracts from what the focus should be)
Coloring of the (Is it swimsuit?) does not compliment the skin tone.
Room decor seem a bit disjointed. Modern design office or waiting room armchairs chairs next to traditional furniture, next to a fridge, office carpet with Craftsman style baseboards???? I can't even begin to figure out what the room is supposed to be.  Is it a porn movie set? :tt2:

I like the face - it has a pretty decent expression, and a bit of a head tilt - this is good. Someone commented on a nose - it looks a post-plastic surgery nose. If that's the look you were going for, then you got it.

I don't mean to bite your head off here. I'm trying to give you an example of what kind of detail 'professionals' tend to spot when they are measuring up another professional's work, or someone submitting their artwork for professional level judging.

This would fall under a good amatuer attempt with good growth potential.

Hi, my namez: "NO, Bad Kitteh, NO!"  Whaz yurs?
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