Excellent job! This song reminds me a bit of the game "Beyond the Beyond". The music gives that feeling of flight, but at the same time, sounds relaxing!
I love it, what else can I say? :D
Best advice I can give you is to adjust your volumes. Your lead instrument is clipping slightly at the higher keys.
Other'n that, nice, simple, whimsical tune.
Thank you, it helped me taking an eye on balance in future songs.
Please contact me if you would like to use this in a project. We can discuss the details.