Just played through your beatmap using the editor coz I managed to fail in play mode :O
Feedback:
1) You should definitely use the timing functions and beat-snapping in the editor. I noticed some of the beats were *slightly* out of time. I assume your rhythm must be pretty ok since you haven't used this, but it really helps make sure beats are where they should be, especially for things like sliders.
2) Some sections seem a bit harder in the song. For example, the blue combo at ~54 seconds, there are 3 fast beats overlapped and a slider immediately following, although placed further away. This seems unusually difficult compared to the rest of the song.
3) Beat placement: some are too far (as above in (2)), and some are a little repetitive. I suggest place quicker notes closer and slower notes further (if you get what I mean). I also noticed you placed a lot of single beats in the centre, especially in the end. Mix it up a little and keep the player interested. It also helps in that I (personally) find overlapping notes a bit more difficult than notes spread out a bit. This could just be me though.
4) Nice use of the new combo at ~1:33 mark! It's pretty cool to see all these colour while playing. It's unique and something I'd like to see/use in future (in moderation).
I'm also a bit undecided with that spinner.
Good first effort, I'll be looking forward to a Gotta Catch 'em All beatmap.