Congrats! You won my Lottery mod from modding queue! Here is your "ticket".
[Easy]
00:08:670 (1) - Maybe put this slider a little more on the left to make a little space with previous slider?
00:11:510 (1) - This is a little nazi: this slider is not perfectly aligned with (2). You can fix it by removing grid snap.
00:13:641 (3) - Usually it's not recommended to stack objects on an Easy diff
00:21:274 (3) - ^
00:25:712 (1) - The curve can be improve to fit better with (2) head (you can see it with the approach circle).
00:28:552 (1) - The curve can be improved too to fit with (3) end. Try to add another slider control point maybe?
00:32:635 (3) - "Usually it's not recommended to stack objects on an Easy diff"
00:39:913 (2) - The curve can be improved to fit better with (3).
00:42:753 (2) - ^ (a little nazi)
00:55:534 (3) - Maybe use the same slider than 00:54:114 (1) ?
01:19:321 (4) - "Usually it's not recommended to stack objects blah blah blah"
01:20:919 (2) - Very nazi: put it at 01:19:144 and you will see that it can be curved a very little better to fit with (3).
[Kin's Normal]
I suggest you to use a distance spacing at 1.4x instead of 1.2x because Easy diff uses already a 1.2x distance spacing. It will makes the progession between Easy and Kin's Normal more coherent.
01:02:635 (1,2) & 01:11:510 (3,4) - Maybe make these sliders fit to each other? (Yep I really have nothing better to say for this map which is pretty good XD Except this little next thing:)
01:21:451 (4,2) - These two sliders can be curved better to fit with (3).
[Hard]
00:03:700 (2) - Mhhh I suggest you to change this slider placement because it stacks with 00:02:457 (1,2,3), even if these circles are a little before.
00:05:830 (1) - Naziiii: the curve can fit better with (4).
00:11:510 (4) - As it's a Hard diff I think you can do without the Distance Snap tool for this slider and put it like this (I reworked it a little to make it fit with (3) head)
http://puu.sh/9awgT/b331dd638a.jpg00:12:753 (4) - Can be curved better to fit with (3)
00:19:321 (4) - ^... with (2) (nazi too).
00:20:031 (6) - ^... with (5) end.
00:26:599 (3) - Maybe place it to make a triangle with 00:26:067 (1,2) - ?
00:30:682 (3) - Can be curved a little better to fit with (2) end.
00:32:990 (1,2,3) - Make a true triangle?
00:43:286 (3) - Nazi: can be curved better to fit with (1) head.
00:45:416 (5) - ^... with (3) head.
01:11:510 (2,4) - Veeeery nazi: curve can be improve to fit better with (3)
01:16:836 (1) - This is not aligned with (7)
01:22:161 (5) - Maybe put it a little more on the bottom to make it fit with (4) end?
01:25:357 (1) - I just noticed that Kin's Normal end this spinner at 01:28:197 on a white tick and not on a red one. Maybe try to find which is the best and make the same spinner end for each diff?
[Insane]
00:06:185 (3) - The head fits with (1) but (1) doesn't fit with (3) at all.
00:09:913 (1) - Can be curved to fit better with 00:09:380 (3).
00:15:238 (4) - ^... with (3) and (5).
00:24:114 (4) - Make the curve fit with (1) with ctrl+shit+r?
00:37:605 (3) - Can be curved to fit better with (4,5).
00:51:629 (2) - ^... with (4) end.
01:18:078 (1) - It doesn't fit at all with 01:17:191 (2) but it could be nice if it does!
I hope I helped a little! Good luck!