Since it's your first beatmap I don't really suggest using 1/8 as Beat Snap Divisor 'cause it's easier for the unexperienced mapper to fail something with the hitobjects position, and as I can hear the song doesn't need this Beat Snap (even if there aren't so much troubles with this in the map)
00:03:013 (3) - Move this Slider a tick later and make it finish at 00:03:435
00:20:873 (5,6,7) - In my opinion there's no need to create a spaced Stream on the final 3 Circles, the rhythm doesn't change then it's unnecessary to separate them, just make them like 00:12:435 (1,2,3,4,5,6,7,8,9)
00:47:873 (6,7,8) - Same with these 3
00:49:466 (4) - This Circle is hard to read and doesn't follow the rhythm of the song, I suggest to turn it into a Slider like this:
00:54:623 (8) - This Circle is not needed, if you just want to add something else you could turn 00:54:435 (7) into a very little Slider so it can match with the piano melody~
00:58:185 (4,5) - I feel like these 2 are two early
01:08:685 (3) - This too (maybe you wanted to make it fit with the strong point of the piano but is a little unreadable in this way)
01:39:810 (1) - From this point you could start a Kiai Time :3