I've been hearing your songs from "Orbo-Reminisce", and after some minutes of collecting my ideas, this is what I have to say (and hopefully, help).
I have the feeling that your songs can't "hold themselves", making me feel like something is missing (and probably is).
Thus, what I think you should focus on is the "base" (or whatever that's called) of your song, as it represents the fundations of your song. What I mean by base is like... a series of chords and percussion that will hold the song, but does not have any melody at all. Once you have a strong base, the song should sound fine just as it is. Then, you can add melodies and stuff.
So... About percussion, all I can say is I'm terrible at it, so I can't really help with that, although, I find them decent.
Overall, the song requires a lot more work to be able to hold itself. The melody is decent, but requires more variation, and the same could probably be said of the percussion. Those background sounds (which I have not idea of how are they called)... I kinda liked them, but they won't be able to hold the melody by themselves. So, work at the base, the fundations of your song, and you should get a much better result.
Have a good day, bye!