your volume levels on the crashes are so high that its causing ''clipping distortion'', when a sound is so loud that speakers distort the audio because it goes past a projectable DB level
hihats, crashes and cymbals, are all part of the:
''if its too loud to you, its most likely very loud to everyone'' group.
so try to watch your high end compression and volume with those instruments, only problem here was your crash however
aside from that this was a nice mix you got, i like the rhythm and the melody behind this
the vocals were pretty cool too, keep it up yo!