01:53:793 (3,4) - It's kind of awkward. The rest of your map is sort of fluid (always moving), and this part interrupts that flow.
00:51:486 (1,1) - It feels awkward to switch from the second slider to the two triplet bumpers. I'd simply go with 3 triplet bumpers.
01:51:947 (2) - The slider ending shouldn't follow the triplet of the previous. I see the triplet bumper before it is too, however it makes more sense to end this one normally.
01:44:101 (1,1,1,1) - I don't see much reason to be adding a new combo for each note here, maybe the triplet and slider stay different but I'd generally keep it in the same combo
01:59:332 (2,3,4,5,6) - The ending seems a bit sudden. I would hit the burst from before however instead of having a slider on (1) I would just make it a hitcircle and put a spinner afterwards.
01:15:947 (3,4,5) - End the sliders with a softer hitsound, my suggestion is the soft finish
01:37:409 (1,2,3) - Replacing with a bumper from the previous combo would flow better IMHO.