Offset was a bit off, 6,131 works better imo
Difficulty name should be "Hard" - Normal is used for maps with a SR <2.25*
Given the mapping style used, CS4 works better here.
00:00:319 (1,1) - Should share the same combo
00:00:501 (1) - This isn't blanketed by 00:00:956 (2) properly since it isn't really placed well.
00:01:774 (1,1) - These are also off center a bit as well. No need for these to have difference combos to each other
00:02:319 (1,1) - Same combo
00:03:228 (1,1) - ^
00:03:774 (2) - Not a fan of this slider's timing and shape/size. I feel as though a shorter reverse slider would do this bit more justice.
00:09:221 (1) - 255,218 gives a more appealing and well spaced blanket
00:09:403 - A circle could be stacked ontop of 00:09:585 (2) here.
00:19:949 (5) - Bit of a strange slider shape.
00:21:040 (2,3) - This spacing is a bit too much compared to 00:20:676 (1,2)
00:23:949 (1,2,3) - Either mapped too late or overmapped.
00:25:039 (1,2,3) - The way these stack looks messy and a bit random.
00:26:494 (4) - I see what you're trying to do with the slider here, but it doesn't really match up that well.
00:36:494 (6) - Weird Slider shape
00:37:221 (1,2,3,4) - I would have preferred a square pattern here, and 00:37:221 (1,2) bit doesn't work very well.
00:37:949 (1) - Would better reflect the vocals if a reverse slider that was shorter was used here.
01:03:221 (5) - A reasonably good attempt of mapping the slider to the vocals, but it still doesn't come out that well.
01:15:949 (1,2,3,4,5,6,7) - An alright attempt at a star pattern, but the spacing is just far too big, especially for a 3* like this.
01:28:676 (5) - The position of this feel really tacky and "off". Maybe try putting it a bit to the top right of the slider head.
01:29:585 (1) - 1/4 slider isn't really needed here.
01:29:585 (1,2,3,4) - This would also probably play better as a square or triangle pattern.
01:45:040 (1) - This Buzz slider isn't necessary, especially since you've previously mapped the vocals using slider shape rather than size and hitsound.
01:47:221 (1,2) - Why is this mapped when the rest of it is just a break?
02:18:494 (1,2) - This might play better if the first buzz slider leads into the second on timing as well (maybe a 1/2 or 1/4 earlier finish, not sure since you've used 1/8 timing :/)
02:19:949 (1) - A 6 second long spinner is a bit long, even if it makes sense from a mapping perspective. You'll be giving people aches
02:35:221 (1,2,3,4) - Poorly Stacked 1/2's
02:39:585 (2,3,4) - ^
02:56:312 (1,2) - Why not just use generic curved sliders, rather than going through the effort to make these, when they don't work particularly well.

My main issues with this beatmap are that the timing for this song might be a bit more complicated than what you've worked with. Moreover, the placement of many of the circles and sliders feel random. That and it's confusing to play, because it feels like you just swap between instruments and vocals.