There's a lot I like about this one, its always nice to see the Milky Way, and I find the distortion and central composition appealing, but then I'm a sucker for fisheye distortion, and the way that the landscape curves frames the tree nicely...
There is a couple of things that I'd like to see different, I'm not keen on the blue tone of the light used to light the tree, I'd like to see the colour temp of the light warmed to to leave it basically cast neutral, that said a rich red could actually work, as I'm thinking of all the radio masts I've seen painted red and white and it could make for an interesting addition as I think red would be a bold enough colour to look deliberate and make the image pop, as it is with the colour currently it looks like it was just a cool white LED torch that was used rather than a deliberate colour choice..
I'd also crop out the little bit of tree or bush that you've caught in the upper left corner, I think you could crop that out while maintaining the composion without any noticeable loss from the Milky Way
Matt