Normal
00:03:399 - I would add a hit circle here, since it's a little weird to not map the first impact of the song.
Hard
00:04:233 (5) - It's not spaced the same length as 4, 3, 2. move it just a tad bit away from 4.
00:04:566 (1) - Aligned kinda weird, it doesn't continue with the same line as the other four, move it to match a little after 5, you can disable grid snap to get exact results.
00:05:233 (3,4) - Like above, move them a little upwards to match the line of movement from the slider.
00:06:399 (2,3,4,5) - Same problem with spacing, it's uneven across all of them.
00:07:233 (6) - Move a little up to match 5.
00:09:066 (2,3) - move one of them so they appear on top of one another completley, 2 is for some reason just a little right of 3 and it's a little confusing.
00:11:399 (1,2,3) - This might be my taste, but I think it would look better if they won't overlap like that, just doesn't look good in the eye.
00:13:399 (6,7,8) - Wanted to take these three to say that regarding the whole spacing problem, make sure that it's the same spacing between all of those short "streams" for the sake of consistancy. these ones are spaced correctly but the spacing is completley different than from the spacing before.
00:14:066 (1) - I would move him a little away from the buzz slider to show the impact and climax of the hit.
00:14:399 (2,3,4,5) - Same spacing problem. they seem to be not align properly too.
00:15:233 (1) - Align to the slider.
00:15:566 (2) - Don't really understand why there's a buzz slider here, since it doesn't reflect the music.
00:17:066 (2) - Move this one a little further since there's quite a time gap between this one and the circle before.
00:17:233 (3,4,5) - Spacing.
00:18:733 (3) - Something about this one looks unatrual, maybe move it a little further so they won't overlap, or align it differently.
00:23:399 (1) - Move it further from the slider because of the time gap.
00:27:399 (3,4,5,6) - Spacing and alignment a little random.
00:29:233 (1,2,3,4,5,6) - Spacing uneven.
00:34:983 (3) - Move this one a little downwards.
00:35:399 (1) - Overalp with other slider doesn't look nice.
00:37:733 (6) - Again overlap with other slider weird.
00:39:899 (1,2,3,4,5,1) - Spacing
00:41:399 (3,4,1) - Spacing.
I think I'll stop pointing out the spacing because I think you get it, just make sure the spacing is even between hit circles because this problem is appearing throughout the entire map.
Other than that alignment and overlap, all of these are the same as spacing with their frequent problems.