Hmm... I have a number of comments here:

One is that ultimately I find the computer monitor distracting. I find myself trying to see what kind of web page or application you're looking at, in an effort to better understand you. But I'm not getting enough detail, so it just "annoys" me that I can't figure it out. you might have been able to express the same goal by showing the monitor slightly from the back - with no screen visible. Then we would have just assumed any number of things.

In terms of composition I wish it were a little less tight. The whole head (or more of it) might or might not have made the picture better, but the right hand so close to the edge is definitely claustrophobic to me. I would also like to have the whole monitor in the picture, it might make the relationship between you and it less intense.

Finally, the contrast is a little high for me, and more visible folds in the fabric of the sweater could do a lot to warm up the atmosphere of the image.

This has a blown look but I think it works here. This is an image that would work well in stock photography.

I love the expression on your face in this shot - the inquisitive look. The highlights seem a little over done but I'm not sure if that is part of a subtle message I'm missing. The space between your arm and your body leaves a distracting hole of light.