I really like the panoramic crop on this one - it draws me completely into the eyes. I'd like a black border top and bottom to finish it off, but that tight crop really works well.
You've managed to keep the eyes pin sharp too. Not easy in a self portrait, but you've pulled it off brilliantly.
To echo what other people have said, this is one of those shots where selective colouring works well, but I have to agree with the edges being a little harsh.
If you've done it via a mask it might be a good idea to revisit with a softer brush or if it's a selection, try feathering the edges a little more as Phil suggested.