Formatting- I think that's the right choice for the composer credit.
- I would suggest removing the curtesy accidental in m36. The parentheses are a bit tight, and it's not necessary given this key has C# already and the natural in the next measure already has the natural accidental so you know you're changing from a C# to a Cn. Honestly you could probably get rid of all the curtesy accidentals just to be consistent.
- m4 LH lower slur is a bit awkward but tug the center down a bit so it isn't crossing into/touching the D on beat 4.
- m33 technically it's only the RH part that is decreasing dynamics. You could put the mp above the RH notes here and at m35, or leave as is, up to you.
- LH m41-44 beats 3.5 and 4.5 should be beamed together, like lower layer of m46 LH beats 3.5 and 4.5.
- I think m44 goes better on the last system. Typically the last system grouping of the song would have more measures than the previous if there is an uneven amount and it also just looks bit better in this instance, if still a little crammed.
Notesm1-2 loop - any place where this part is it is up an octave from the original. However, I think this was a good arranging choice so that the RH and LH pitches aren't too close.
- m5 and similar LH - I think An would be a better choice than the G
- this would also apply for m9 3.5 and 4.5 and similar, An would go better with D major chords
- m13 LH and similar - beat 2 is 16th rest-Bn-Bn-Bn. So all are 16th length. I guess you could decide to either combine the last two 16ths into an 8th as is but as a Bn instead of C#, or have the 2nd Bn be up an octave.
- beat 4 of this measure is the C# 16th note and an F# at 16th length. Beat 4.5 would be an 8th rest.
- beat 3 and 3.5 sound short for 8th notes so put staccatos on them.
All together this measure would look like:
- m27-28 there is no D# in the tied notes but there is an En. Also, I think it would be best to split those last notes in m27 into two layers; that way you can tie them over to m28. Unfortunately you can't just drag the ties with the Tie Mover tool.
- m29-32 RH notes are not different from the other parts of this track with the same rhythm (A-A-D-D and F#-F#-C#-C#). It's a little harder to make out
-m35 and m37 RH, there are vocal notes here you could have as a response pattern to the m33 and m34 notes.
m39-40 RH have been written up an octave, and in this instance, they would work a little better down to their original octave
- m39 RH first cluster is good as is, but the G# on the bottom should be a Bn. It's hard to hear but the lower A in the first half note ascends to the Bn in the next one.
- m40 RH there's a C# in between the F# and the lower An