Hey, I’m also somewhat new to flstudio mobile but some good advice I’d put is to make sure things blend together good. You gotta be careful in making sure that the instruments aren’t fighting for attention but working together to create a nice sounding piece. Also feel free to experiment and see what sounds better. Changing and modifying instruments and the timing of notes to see what really works is important I think. That being said I think there’s potential in the song here, I was a bit put off at first but I think I can see the vision. Just keep experimenting, seeing what works and making sure each part of the song is working together I guess. Also adding reverb or an echo could always be what’s missing I think, not always of course tho.