Comments like this are always personal so take with a grain of salt ..

FWIW, nice job.
To me the main piano doing all the fills is too forward. It's busy; that alone will make it heard.
Also I think you could cut some low end on the rhythm sound off to the side, which will allow you to boost them a tiny bit to accommodate and also free sonic space for the bass to let it be clearer and more defined.

Then Ozone it.

I do not work here, but the benefits are still awesome
Make your sound your own!