Sorry that it took me so long to get to this. =x
[General]*Ending on each of the maps is a bit awkward. I expected a spinner or something (not to mention that only one of the difficulties actually uses a spinner).
[Easy]01:32:474 (1,2,3) - I suggest avoiding stacks like this. Notice the gap between the notes and approach circles? That will be confusing to players, so try moving (1)
like this instead.
02:05:013 (4,1) - overlay might be slightly confusing.
02:11:705 (3,4) - Try to avoid kick sliders like these in easy difficulties as well. They can be a bit too fast-paced and unpredictable as to when it's time to click the next slider.
02:20:474 (1,2,1) - Found it odd that you stacked two of these but not the third.
[Normal]*OD/Drain could possibly be raised one tick each.
*Maybe lower the approach rate one tick?
01:15:397 (3,4) - overlap is a bit confusing/hard to read
01:26:474 (1,2,3,4,1,2,3,4) - much too hard to read for a Normal diff.
[Natteke]*Spacing and overlaps were a bit confusing in this diff. I was able to sightread them fine, but I'm a bit concerned since this is otherwise a very easy "Hard" difficulty.
01:17:705 (1,2,3,4,5,6,7,8) - I see that it's a pattern, but it's still tricky to read.
01:20:243 (2,3,1,2,3) - overlaps make some of the sliders hard to see.
01:31:320 (4,5,6) - try to avoid stuff like this, since it's hard to tell that 6 is a slider.
01:37:090 (3) - a bit hard to tell it's a slider
01:56:013 (3) - you can tell it's a slider since you didn't stack them 100%, but it actually looks a bit ugly like this. Could you rotate this slider or something?
This map is definitely on the right track, so here's a star icon for you. :p