I think your lighting is pretty good, especially for a first try and a "more than real" look, showing more contrast in a face than there usually is, which is one possible style. This style I hardly ever use for clients, but rather with friends and self portraits for the fun of it. People tend to not like this kind of lighting (especially not of themselves). Almost everybody says: oh, look at all those wrinkles, please retouch them. The interesting thing is: photographers seem to like that kind of look much more than other people.
That´s why with portraits I do prefer a more friendly look. So I tried to brighten up some parts of the face, reduced the contrast in the face and reduced the lighting a bit on everything but the face. This could have been done by changing the ratio of the light and/or placing them differently (move them towards the camera in z-axis and more towards the face in x-axis), but I guess you know that anyway.
Well, and then, I would have tried a little smile

.
Most of my clients enter the door saying - it´s gonna be hard work because I don´t like to be in front of the camera at all, and btw: I look really bad on images. In fact around 80% of them are having fun, 10% don´t really care and mainly want their image quickly and only 10% of them are really hard to shoot.
Not everybody has to like being in front of a camera, but most of those who don´t just take themselves and everything they do a little too serious. Making fun of yourself and your little shortcommings (if they are even there!!!) goes a long way. Luckily I have quite good attributes for that - I have a bald head, skew teeth, and a long crooked nose. I am allowed to tell people not to care about their teeth when they refuse to smile in front of the camera, and I tell them that other people looking at their images will be attracted by their smile rather than their teeth, or by their eyes becoming smaller when they smile. The vast majority would never do that in public, so why should they look like that on their portraits?
I just recently shot a series of images of myself - just for the fun of it. Here is a comparison of two - which one do you think people (NOT PHOTOGRAPHERS!!!) liked best and which one do I like best? I think I look best not smiling - people usually think the exact oposite (except some photographers

).
To cut the long words short: don´t be afraid to smile, people will like it!