I was doing an oil self portrait before. I stepped away from it for about 3-4 weeks and finally came back to it today. I think it's finished.
Your values and colors seem pretty good. The face is kind of skewed.
This is off to a good start, but I don't believe it's finished just yet. The face is a little skewed. It seems that the top of the head is square and not round like the bone structure beneath the skin. And the shirt is a little flat. It's not exaclty the shirt that's the problem, but try to be concious of what's underneath the shirt. Try to show that somehow. Any way, I hope this help you a little.