I'm going to go over a few general points;
BackgroundThe background looks stretched vertically. I'd take the BG from the current ranked set of this song,
here, which has better proportions or taking a more standard Love Live BG, as the BG does not have to be specifically for this song. The BG from
here is a .jpg file where your current one is .png. Since .jpg is normal for BG images, because of their smaller file size, make sure you edit the code for all the difficulties to allow it to read the .jpg file
Slider Velocity ChangesIn my opinion, all the SV changes are unnecessary in this difficulty. The SR is quite low so they are quite confusing to new players and, in my opinion, quite annoying as well
The 0.95 SV changes, like at 00:08:992 - and 01:12:684 -, barely change the notes visually, which means it doesn't really give any positive effect to the player. But since the SR is so low and the SV change is not obvious, you could cause the player to consistently hit too early because they expect the notes to arrive earlier, especially since they probably won't be able to listen to hit accurately. Same applies to the 0.90 SV changes
With the SV changes starting at 03:50:530 -, they should start earlier, if they're going to remain there. 03:50:530 - should be where SV changes end, as this is the start of the new section. You should also use more uninherited timing points because the change is not very gradual, in my opinion
For the SV changes starting at 04:00:684 -, they end at the right place but you should add more timing points; again, it doesn't look very gradual in my opinion
AudioThe audio volume at all the timing points is too loud. Change it to something around 30%, which is standard for !mania maps. If it's loud because the hitsounds are soft, use a audio editing program, such as Audacity, to make them louder
Offset and BpMThere is only one timing point in this song, since it's a 130 BpM song - rather than a 130 BpM song with a 131 BpM introduction. Also, the initial timing point has the wrong offset. Do the steps in this order to minimize the time wasted on re-snapping notes:
Go into the timing point menu. You can use F6 as a shortcut to get there;
00:01:623 - change the offset to 1605, the BpM to 130 and
then tick the box for "Snap objects to new timing" ;
Change the "Beat Snap Divisor" to the smallest snap that you've used in the difficulty, unless it's a triple (1/3, 1/6, etc). This is probably 1/4;
Delete the inherited timing point at 00:08:989 -;
Select all the notes, with Control+A;
Move the notes then release them on the correct snap
If you used a 1/3, 1/6, etc, snap in this, you might have to go to them and manually snap them correctly. Otherwise, all the notes and LN ends should be snapped correctly.
You'll have to manually change the remaining uninherited timing points and preview point to the correct offsets
From here onward, I'll be using the new timing points
Also, the things I'll be covering in the Note Consistency/Chord Sizes and Patterning sections are general things that should be applied to the whole map
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Note Consistency and Chord SizesThis is the number of notes that you've used for each sound in the difficulty, including sounds which you haven't mapped. Generally speaking, you should keep this consistent throughout a difficulty or, at the very least, a musical section, provided that each section is relatively long. Being inconsistent can be disorientating for the player. This is because the number of notes given to each sound is based on how strong that sound is. The stronger the sound, the more notes should be used
The main exception is if there is a burst. For example, you normally use two notes for snares but there is a snare roll. You can use single notes to represent the roll, either to stop a difficulty spike or to stop SR inflation from a chord trill
This can also apply if you're mapping sounds like vocals or an electric guitar, where you probably wouldn't map them every time they appear due to them mostly needing LNs, which is most applicable for 4K
However, there are a lot of consistency and chord size issues within this difficulty
You're mapping weak sounds with large amounts of notes. 00:01:605 (1605|2,1605|0,1605|1) -, 00:03:451 (3451|1,3451|3,3451|2) -, etc, are mapping the piano chords. However, these are quite weak sounds so using triples is overchording it. Make them doubles
Starting at 00:08:989 -, you've started using LNs for the electric guitars. Whilst they are strong sounds, you should make them single LNs, not one LN with an SN or two LNs, because you're missing out on other strong sounds because of it. The snares aren't being mapped at times, when they should be at places like 00:09:451 - and 00:10:374 -, and the same goes for the kicks, like at 00:09:912 -, 00:10:028 - and 00:10:143 -. Whilst the snares and kicks are weaker than the electric guitar, I still think you should be mapping them because they provide a stable base for any difficulty. Kicks are relatively weak sounds where snares are relatively strong so, in an easy difficulty like this, they should get one and two notes, respectively
Kicks like 00:23:758 (23758|2,23758|0,23758|1) - should not get three notes. At the most they should only have two and only with an accompanying sound
02:32:989 (152989|2,152989|1,152989|0,152989|3) - for an easy difficulty like this, quads are inappropriate, even if they are mapping strong sounds. In my opinion, this crash should only be a double. The maximum should really be a triple
The same goes to all the other quads in this difficulty; 02:36:681 (156681|3,156681|1,156681|2,156681|0) -, 02:47:758 (167758|1,167758|2,167758|0,167758|3) - and 04:18:681 (258681|2,258681|0,258681|1,258681|3) -. In my opinion, none of them are strong enough to have more than two notes
Sometimes, when you're mapping LNs with SNs, you add one more note to each chord. I would remove the extra note each time this happens, like with 01:08:066 (68066|0,68066|1,68066|3) -. The player still has to play all the notes at the same time and adding an extra note often makes it too heavy for the sounds at the time
Patterning00:03:220 (3220|3,3451|3,3451|2) - these jacks are too quick at this difficulty when you make them like this. If you have a jack on one hand, putting a second note at the end of the jack on the same hand is much more difficult than putting the second note in another hand. The chord at 00:03:451 - should now be a double so there's enough free columns to put the note in the LH
00:07:143 (7143|0,7374|0,7374|1,7605|1) - the same goes for these jacks. As well as having the problem stated above, the jacks are in the same hand. If you need to do a jack like this in an easy difficulty, spread them out. 00:07:143 - and 00:07:605 - should be doubles and 00:07:374 - should be a single so you can easily avoid jacks. They should be avoided because jacks are used to represent repeated sounds, which these are not
To avoid clogging the columns, LNs like 00:12:220 (12220|3) - should end when the next note starts, in this case it should end at 00:12:681 -. This does not apply when there are more free columns
00:22:605 (22605|2,22720|1,22835|2) - this minitrill is snapped to 1/4. It's quite fast so avoid {x,y,x} patterns, spread the pattern out between the fingers. This should be more important now than before, since there should be a double at 00:22:374 -, for the snare, and singles at 00:23:066 - and 00:23:181 -
00:53:989 (53989|1,54220|1) - shields are not easy to play, especially at this level. Remove them
00:54:912 (54912|0,55143|0) - jacks like this are not representing a repeated sound. Remove the jack
01:25:605 (85605|0,85720|1,85951|1,86181|1,86297|0,86412|1) - especially on easier difficulties, you want to avoid patterns that are unnecessarily heavy on one hand. Here, you should move notes into the RH. Also, {3} is quite empty and should get more notes
01:29:297 (89297|2,89412|3,89528|2) - this pattern should definitely move a note to {0}. Playing these 1/4 notes in one hand is asking for too much
01:46:258 (106258|0,106489|1) - overlapping LNs are, again, too difficult. Make 01:46:258 (106258|0) - end at 01:46:489 -
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PM me for any questions