The rhythm is rather simple.

However, I notice a real issue is the reverb seems to make the whole track feel off. I realize it is more or less to help boost up the bass notes but it still feels like it just throws this whole track off.

The main rhythm is interesting. It fluctuates between tight quick notes and longer notes. The track would be a lot better if the notes were long note the whole way with very few to no shorter notes to give a much more ambient feel to the song.

The tune sounds like it would be better if it had a drum track playing behind it, as in a drum pattern usually hear in most ambient tracks. Might move the genre a bit elsewhere but would make it better I think.

Overall, interesting, just practice and you should be better in time.

That experiment works quite good. There are some parts in that melody that sound a bit off on the harmony, but that's ok.