The first one is not really to my taste as a photo, but seems too soft overall and I think would be stronger if, say, the ring were in sharp focus.
The second one works very well, although *might* be better with a slightly darker exposure.
The third one again too soft, you needed to focus on the eyes. Which is very hard for a self-portrait, I know. Compositionally and regards the pose, I think I prefer it cropped just above the hand. I think the look on your face is great here.
The fourth one - I love the idea, the composition (though maybe better without so much white space on the left), and the blurring away from the top. Nice work.
I haven't tried self-portraits of this kind, but if you can it might help to close down the aperture where you need to nail the focus more; it gives you a bit more scope to be slightly out and get away with it.