First time composing with musescore, any tips?

In the attached file I changed the notation but not any sounding notes:
- Some ties are not necessary, you can write dotted notes instead. However, there are unclear cases like measure 20 because your piece keeps wandering between 3/4 and 6/8 time.
- Measures 12 and 13 should be a♭ instead of g♯ because that’s the more correct way to notate the neighbouring note to g in a c minor context.
- Measures 21 to 26 should use 8va (but not 15ma) for better readability.
- Measure 34: A tie across a rest is very unusual, I wouldn’t know how to play it in this case.

Some comments about the music itself:
- It’s nice that the theme from the beginning reappears at measure 28. Maybe you could have even a little bit more similarity there.
- The very high melody in mm. 21 to 26 is a nice contrast before the first theme reappears.
- Measure 7 is very dissonant: you have a, b, c, d, e and g sounding at the same time (because of pedal). Measure 32 is better IMO. Some dissonances are nice (like f. e. in measure 8) but m. 7 doesn’t seem to fit in.
- I don’t “understand” what is going on in m. 33, it seems not to fit. Some ideas what might be “wrong” here:
1. The f♯ in the right hand doesn’t work well with the f in the left hand.
2. The bass line b–b♭ “wants” to go further down to a like you did it in m. 7/8.
3. The second chord in the right hand is very large and not easy to play.

Here is an attempt for an alternative version of m. 33 that tries to address all of the three points without changing too much:

My tip is: read the manual.