I see improvement.

This one had more of a tone-setter than your other songs, it sounded like something I'd hear while walking around a particularly calm planet in Ratchet & Clank, very peaceful and serene. I like the cricket sounds, they give it some nice atmosphere.

If I were you, I would take this l'il gem and make it longer by repeating the theme, embellishing it each time and then winding down back to the original theme before ending, just so that it can loop correctly. Like, here's a more visual representation:
12345432(start over)
The numbers stand for the degree of embellishment in each repetition, as you can see, it gets stronger and stronger and then goes back to normal, to make sure that it loops perfectly. Not only would it make the song longer, but it would give it much more substance.

As you can see, you're starting to get nines from me. Make more stuff like this and you'll hopefully get a straight-ten!

PS. Have you been taking composing lessons o something, or are you just naturally getting better?