I really like the choice of palette and the composition here. I also love the combination of different pixeling styles, with some straight lines, curves, AA and so on. I just wonder if it would improve the piece if you reconsidered the shading of the trees. It seems weird that there's so much dark shadow on top and so little contrast. It looks a bit flat. Maybe something like this? I don't know. 
Thanks so much! the feedback is much appreciated, i should have noted this was older work though lol- i would probably do a few things different if i re-evaluated it, that shading being one of them. Again, glad you like it!