This is a cool piece. Great proto-stride feel, catchy melody, tension and release.
I would love to hear some realism and breath injected, to match the lovely notation. Pianists almost always pedal after notes begin for a legato sound and to avoid sudden drops in volume, apart from the times you intentionally want that. Slightly randomize note-on and velocity. Most importantly, go nuts with tempo automation; shape tempo and velocity with the phrasing like a concert pianist. Contrast is king.
Side note: There's some clipping in spots like the initial phrase and it's recap at 1:50, which could be a gainstage issue within the sampler itself. I used to have that problem in Keyscape, and I solved it by going into Settings, lowering Gain to -10dB, and then bumping up the volume in my daw before the signal hits the master limiter.
Great work dude. With some humanizing and gainstage adjustment, this could sound like a legit concert recording.