The clap could definitely be better... the sound that starts a 1:28 could be a little more.. whimsical? it seems a bit TOO pronounced.

The feedback on the piano I think is just a hair too much. Not that the volume (size) of the delay is over the top, i just think it needs some low cutoff to smooth it out.

The strings should have some subs in there, the guitar at the beginning and end sort of adds that... maybe have a dedicated one and use a EQ to remove the low end of some of the guitar....

Everything else is perfect and I'd not change it for the world.

Well, first 30 seconds and I'm liking the jump... oh wow. Jumpstyle for real there a bit.

I would fatten that saw up a bit. The Piano is taking the lead and also driving the song rather than the saw doing the driving.

Four on the floor at the end, with a downlifter for the ending. Pretty solid.

Other Notes:
Add some reverb to that crash! It just dies after it plays!
Try messing around with a lowpass filter. Its common in Jumpstyle/Hardstyle (well most electronic music afaik)