Alright, so I'm okay with the ambient vibe you're going for, but I'm not feeling it as a theme. No offense, but there really isn't much of a theme to it. A theme is something that repeats, something with a format, something that happens once and then comes back so the listener can be like "that sounds familiar," and that's what helps associate a piece of music with, say, a character or setting.
So in my opinion, it was a bit rambling, and wasn't very concrete.
Now that's not to say you don't have anything at all. There's a lot you can work with, here. You just need to focus it a bit, and zero in on what, exactly, your theme is.
I know you're just starting out, so definitely try to get some music theory learning when you have time. Knowing basics like chords, and how they're put together, and how to choose a melody to go on top of those chords will give you a lot more insight in to how (and why) good music works.
I hope you don't mind, but I took the liberty of tinkering with your track. I took the first 10 seconds or so, and kept 90% of the notes, but adjusted the timing a bit and made some slight alterations. Then I repeated it, and the second time, I gave it a new ending. Really simple sectional (ABAC) songwriting type stuff. Like I said, I think you have something. You just need to focus in on it a little more.