I think I'd break your mapping style a bit but I don't force anything in my mods so don't take me a bad guy xD
[Hard]
first thingy the overall flow sometimes goes bad because of sliders imo, I mean the slider curve messes the flow a bit. 00:24:371 (1,2,3,4,5,1) - I like how you made the flow very nice here, so accordingly I'll point out some of slider curves that I feel wrong with. also consider to add a silent soft-sliderslide? it's noisy in default skin lol. also remove the widescreen support in design tab maybe? it's inconsistent with other diffs here.
00:01:371 (3) - you can make this curve more soft so it'll look better in my eyes, plus this would be nice if this has a similar movement with 00:00:871 (2) - :https://osu.ppy.sh/ss/7183422 also 00:03:371 (3,2,4) - all of them looks rounded kinda hard, so you could consider to make them like what I did in the screenshot, or at least nerfing them to be looking more smart.
00:11:371 (4) - in this case, I would do with this following the flow from 00:10:871 (2,3) - so like this:
https://osu.ppy.sh/ss/718347400:12:371 (1,2) - same as about slider curve, they should be more smart imo.
00:15:621 (4,5,6,7,8,1) - let's talk of the two triplets. you mapped it in the same distance but the sound in music isn't the same, so you might wanna express the music in a different way. 00:16:121 (5,6,1) - is following the main malody, and 00:15:621 (4,5,6) - is not, and this sounds weaker than the main malody for me. therefore 00:15:621 (4,5,6) - distance for this can be decreased or a 1/4 slider with a reverse also works nice here.
00:24:246 (8) - remove this? there's no sound in the music and you were following the music properly.
00:34:371 (1,2) - this is also nice example sharp you did.
00:37:371 (4,5,1) - this pattern, I'm thinking that 00:38:121 (5) - is kinda out of place. it's because of the slider curve (sorry, again lol) it plays really cramped. try something like
https://osu.ppy.sh/ss/7183595 as this is what I often use in my map when I wanted to map this pattern, and famous mappers also do! btw, use copy and paste a slider to make a symmetry properly if the objects are close each other unless it's intentionally done with different slider sharp.
00:38:371 (1) - finish on head?
[Normal]
I should say 1/4 sliders are too hard for newbies.
00:12:371 (1) - slider sharpe can be improved.
https://osu.ppy.sh/ss/718366900:21:371 (3) - I'd say same ^
00:24:371 (1) - overlap isn't usually a good idea in lower difficulties.
00:32:121 (3) - distance error here, it should be placed by x1.5. and 00:33:371 (2) - also too close with the previous slider, keep the distance snap same unless you have something reason on them.
00:37:371 (3) - slider curve stuff.
distance snap is sometimes messed up inconsistently in this difficulty, check all of them since lower diffs need a specific distance overall.
nothing much to say in Easy difficulty except slider sharp thing, but you'd know what I mean and what you'd do with the mods in Hard and Normal. the hitsounding is very simple, I like it! oh, also OD 0 is really rare nowadays haha, you can consider increasing on ODs in all difficulties you made here. like 1/3/5(Easy, Normal, and Hard) or 2/4/6 as OD4 is a bit boring for a Hard difficulty, the 2nd one is probably more popular setting. good luck with ranking process!