I'm not very experimented so feel free not to follow my advices if you disagree with me.
00:25:575 (2) - This slider looks bad. You should try reproducing the previous one.
00:29:860 (1,2,3,4) - These look bad as well. Making them totally straight might be better? Or simply use better curves.
00:32:309 (1,1) - Perhaps these are too long for such a difficulty.
00:40:269 (2) - 00:41:493 (5) - These curved hold sliders look bad. Consider using several beats instead of hold sliders, or making them straight.
00:50:677 (3) - Try making it horizontally symetrical?
01:06:595 (3) - The change of direction doesn't seem to correspond to any part of the song and feel unnatural.
01:22:820 (5,6) - These two should be one single slider.
01:55:575 (2) - Well, that's ugly.
02:12:718 (1,1,1) - I'm not sure whether you should make new combos here.
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I think you make a questionable use of consecutive sliders where the second starts where the first end, but, all things considered, it's not that bad.
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When using beats close enough to overlap a little, consider making straight lines instead of 'curved' ones, it'd look better.
00:44:554 (1,2,3) - 00:45:473 (5,6,7) - 00:51:901 (6,7,8) - 01:24:962 (3,4,5) - 02:24:503 (9,10,11) -
