Hi just posting I'll mod this today or tomorrow.
General:
JK insane has different tags. Please add opening 2 to tags. Although personally I would remove 2 from tags because it's too short and too general to even find this beatmap.
I think you should change your kiai time to match JK's as it feels way better than your current placed ones.
Normal:
Considering this is the easiest diff...Perhaps you could use 1x DS? I think the notes are rather spaced far apart. -1 OD would be better too so it isn't too harsh on beginners who don't know the song well.
00:28:781 (2) - Perhaps reading the guide would help you create better elbow sliders? Read
this and look for elbow slider.
00:30:109 (3) - ^
00:49:489 (1) - I don't think this spinner is necessary. Perhaps remove it and map this part? Spinning also causes beginners to tire out rather quickly so it's another reason why removing it would be good.
01:11:790 (6) - Moving this slider to 01:11:525 sounds A LOT better. Remember to space the next few combo if needed.
01:38:339 (1) - Don't silence notes. This is unrankable. Please raise this volume to somewhere that is audible (maybe 30%)
01:53:206 (2,3) - Changing these two notes into a slider would be better since mapping to blue ticks is not recommended on the easiest diff. Changing it to slider would allow you to map to blue ticks but without making beginners have trouble on blue ticks.
01:54:003 (4) - See if you can improve this elbow slider too with the guide I gave you.
02:07:808 (1,1) - I think you can map these spinners? They are placed at where you can hear vocals so I think it could be good to map it and remove some spinners.
02:16:569 (3,4) - Same note about mapping to blue ticks. Perhaps a slider?
02:18:693 (2,3) - ^
02:26:525 (6) - I think moving this to 02:26:657 would play better and also prevent blue tick.
02:27:587 (2) - Same think. Moving it to the white tick would be okay since it will follow with the consistent BPM so it shouldn't trip beginners up
02:29:711 (2) - ^ Move it to white tick
02:37:808 (1,2,3) - Make these into a repeat slider instead? Gets rid of the blue tick note and will be easier with a slider.
02:46:038 (1) - I think this note appears way too fast after a spinner in normal. Delete slider and add note at 02:46:303 would be better since there will be more recovery time.
02:49:489 (3) - I don't think you need slow down here. Perhaps reverting back to 1x would be better since slowing down the slider could confuse beginners.
Map to the end like you did on hard.
Hard:
I think AR7 would play much better. This song doesn't seem fast enough to me for AR8.
00:15:507 (2,3,4) - This one seems rather confusing...Most people usually do these kick sliders with only 2 repeats so the next slider will start on white tick. Yours however, has 3 repeat which will make it start on blue tick then on red tick. I suggest making it only repeat 2 times. Example
http://osu.ppy.sh/ss/16517100:24:003 (1) - This slow down here is rather flow breaking. You move at rather normal pace and then this extremely slow slider pops out. I think using 1x SV will be a lot better.
00:43:383 (2) - Same note about elbow slider on normal.
00:48:958 (3,4) - This doesn't follow the vocals too well. You're mapping 1/2 tick late (If you were mapping to vocals that is). Moving these two notes and starting at 00:49:223 Will be better.
01:06:879 (5) - Move this note elsewhere? The overlap with 01:05:418 (3) seems bad.
01:11:392 (4) - Remove this slider and add a note. Move 5 to here 01:11:790 and extend the slider to the white tick? This plays out much better as the slider will now be right where the singer holds the note.
01:54:268 (6) - Move this slider elsewhere? You have a bad overlap with 01:53:604 (4) and 01:55:728 (2).
02:40:595 (6,1) - The gap between these notes feel weird. Perhaps you could follow my suggestion like earlier with 01:11:392 (4)? That is make 6 a slider and map a slider from 02:40:728 to 02:41:525. Follows the music better and it also removes that odd gap.
02:44:445 (7) - Same note as above.
JK:
Well since it's an insane I guess AR8 is okay.
00:25:197 (8) - This slider is rather hard to hear. Perhaps 30% would be a lot better?
01:54:268 (1,3,5,7) - Maybe add soft whistle? Seems rather bland to have no hitsound at that quiet spot
03:16:038 (1) - Hmm. After a spaced out stream and then a slow down slider doesn't feel good to me. Perhaps you should space your streams closer or make a less drastic slow down. Perhaps .80x SV?
03:18:958 (1) - I suggest you space this closer. You had slow SV a small jump which could be unexpected.
03:19:755 (6,1) - Space this please. A jump stream seems rather not fun. Especially if you aren't an experience mapper yet.
Overall:
I believe some sliders could do with a little more extra work and some overlaps/note placements I didn't like too much but didn't point out since you probably did some intentionally. Perhaps a little polishing would be nice. Also your NCing seems rather random, but I'm not that good with NC mods.