m4m!
General stuff: i dont think you need to use brown for combo color, since it's not a major part of the color composition imo. the brown and the black are almost the same color to the eye, so if you do want to use brown maybe you can make the brown darker? the colors that stand out the most are blue white red and yellow. i recommend you use yellow instead of brown since yellow is the color of the main source of light on the bottom left.
[Normal]
01:00:337 (6,1) - bit close, maybe move the 01:01:003 (1) - down a bit to give it a little more room
[Hard]
00:06:671 (6) - maybe move left and up a little bit to balance the spacing
00:38:003 (3) - in this slow section, maybe these notes would look better if they were farther away from the slider? just a little bit imo
00:39:003 (1,2,3) - looks kind of strange if the sliders are touching just so slightly, especially since no other slider in the map does that kind of overlap. maybe push these sliders closer or pull them farther away from each other?
01:01:837 - how come there's no note here? it would make sense to have a note here given the rhythm choice in the rest of the map
[Lunatic]
00:36:003 (1,2,3,4,5,6,1) - maybe you can increase distance for this pattern a little, since it's a climactic part of the music
01:08:003 (1,2,3,4,1) - same here, just a small increase in distance
[Extra]
00:16:337 (1) - 00:32:337 (1) - why are there straight sliders here? the sound isn't special, and i think it would be nice to have only curved sliders appear in the first half of the map, since you're almost there already anyway. maybe it's to signal the "build" part of the song, im not sure
00:22:003 (1,2,3,4) - you could make this pattern look more like 00:06:003 (1,2,3,4) - this pattern and 00:10:003 (1,2,3,4) - this pattern. you can also do the same to 00:30:003 (1,2,3,4) - this one too. maybe it's intentional that they slowly draw closer together but i think it would be better to go for the simple option and make them all similar
i think 00:34:670 (3,4,1,2,3) - this pattern is a lot harder than 00:35:670 (1,2,1,2,1,2,1,2,1) - this pattern. you can buff the second pattern by ctrl+g 00:36:670 (1,2) - , that way you can have an awkward "diamond-shaped" movement, which will echo the first slider pattern (00:34:670 (3,4,1,2,3) -). i also suggest moving 00:34:337 (1) - up a little bit, to about x:84 y:357, just to nerf the pattern very very slightly.
00:52:003 (1,2,1,2,1,2) - i suggest making the pattern look something like this
https://puu.sh/xDiMq.png (not exactly like that, but same general movement) so that it can echo this pattern at the end 01:08:003 (1,2,1,2,1,2,1) -
01:08:837 (2) - i suggest lifting this up and to the left a little, about x:87 y:160 to buff the distance and make the last jump to 01:09:003 (1) - a little more downward angled, would feel better imo
excellent map, super fun to play, and amazing hitsounds. it was hard to find anything to mod, so i gave lots of subjective suggestions. i hope this was helpful at least a little bit!