Your mixing has improved immensely. I won't say that you sounddesign is better or worse in comparison to that of some of your previous pieces I listened to, but I can say that the soundesign here serves to create a clearer theme and atmosphere. The theme was evident as soon as the piece began, which I think is appropriate considering the video game vibes I get from this. One thing that I really like about this track is that it retains its soothing quality without spurring a passive listening experience. There is lots of pleasant variation and detail that's worth paying attention to. I love the fx that makes me think of bird chirping. I wasn't blown away by this piece, but that would defeat the purpose; it was a very pleasant and relaxing song that I can imagine hearing in a typical side-scrolling game :D
I usually give a rating of 5 on NG by default, but because I rated this a four in the competition, I think it's appropriate to keep it consistent here.