
-There's this little 8th note pickup before the piece begins, did you leave that out intentionally or is that a weird ost thingy?
-m41: The glissando here is way too long to be played as a convincing pitchslide effect, assuming it was meant as a white key glissando: the length of each note will just be an 8th note. If you meant it as an chromatic mordent, it would be a bit slower than a 16th per note, as doing a 16th would end up a bit too high. I think I'd write 'chromatic glissando' at the start of the gliss, and end somewhat higher than you have now (or, alternatively, just write it all out like a 16th note chromatic run).
-m65: With "sost" you mean using the middle pedal to hold the R.H. notes, right? Note that this will also hold the L.H. C on beat 1, even after restriking again, which doesn't sound like something you intended :p You could move that bass note over a 16th, so it won't be held too, but otherwise you might wanna think of an alternative solution to holding those chords (like toning down on the amount of notes in the chord to make it playable).