I'm not really a pro with speed maps so take everything I'm going to say with a grain of salt.
The first part of the song (0:00-1:10) is the roughest. There are some mistakes that aren't that big of a deal but the stream part is where I think it shows the most. In the later parts of the song you mapped the streams with spacing differences. Sometimes it got bigger sometimes it got smaller. That's missing from the first minute of the song.
Other than that the other big problem that I have is the hit sounding. I understand that it sounds cool, I think that too, but during the gameplay it's a bit hard to hear the piano sometimes.
It's a cool map though. Other than the beginning it looks clean with not many problems that I could find. Good luck getting guest difficulties for it.