Well, I opened it in Cakewalk to give my analysis.
In MIDI the velocity controller is used to simulate dynamic contrast in degrees from 0 - 127. In this case you chose all velocities to be at 127. Play with this controller a bit to get more contrast out of dynamics. Also when a human usues a MIDI keyboard to sequence, velocities are usually recorded and are apparent in the MIDI file.
When we sequence we also must remember that the computer doesn't comprehend articulartion marks such as slurrs and staccatos. So you have to modify note values to compensate for this. Eg: 8th note staccato may be given a 16th note duration to simulate effect.
Trills and other ornaments need to be realized in MIDI notes.
You can use the Tempo controller to simulate more human effects such as rubato, etc.
Controller 64 is sustain pedal, 66 is sostenuto, and 67 is una corda. You can use these much more. Becareful with sustain, remember to put both controller down and up messages. If your soundcard has limited polyphony you may hear notes being dropped.
Bar 30 and similar: the trill terminations could have been done more gracefully.
Bar 65, be more careful when reading repeat signs. If you intened to do no repeat, just skip 1st ending.
Bar 187: Not accurately sequenced. You made all the notes from the cadenza hold for the whole bar. Also these notes do not need to be rushed. Spread them out over several measures or if you want all of them in the same bar change the time signature to something like 32/4.
Bar 190: Be careful when doing cut and paste work, or when inserting / deleting notes and rests. If in doubt and you don't think you can fix it, erase the whole section and re-sequence.
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As for what others above have said. I agree. There is sufficient evidence here in the MIDI data that suggests the piece was not even entered with a MIDI keyboard but rather with computer keyboard and mouse.
Please don't misrepresent recordings, what would one gain here by doing so. When members have posted recordings which are not theirs, they simply indicate so in the post. Would it not have been better to say: this is a piece I programmed into my computer. Members here would probably have been more receptive if you were honest to begin with.