YAY this piece is amazing (so beautiful)

for the beginning Andante I'd practice just bringing out the melody expressively since technically it's not as difficult as the other parts. The Presto part is a little more tricky so you'd need to practice phrase by phrase each hand separately then bring it to gether (SLOWLY); e.g. from the E-D#-E to the 4th measure where it has the 8th rest.
That's all I can say for now because I played this a long time ago, but it's not too difficult once you get the hang of it

Are there specific sections where you are having trouble at?
Edit: Oh and the section with the E major arpeggio and descending phrase with C#--you should practice hands separately (again). A lot of is repetition and once you get the pattern it shouldn't be too difficult.
Also, for the last part with octaves, I'd recommend playing with both hands slowly.