The 2nd chords are out of scale.. You can fix that by playing in the scale you made your song in. You could also work on your mix and composition.
I like your ideas, like the lowpass filter in the beginning of the build-up. But it's all just a bit to much, you can still put that lowpass filter in your track but don't put it so low. The slope is too steep btw, I think you've set it like this: http://prntscr.com/h2nm1b . I would recommend you to make the slope less steep, like this: http://prntscr.com/h2nmnh . This way you won't hear annoying crackling when the filter is moving up.
The melody in the drop is nice, but it's a bit too random. I like the samples you used to fill up the drop :) They're a bit to loud tho, The lead sounds a bit thin, you can fix that by layering.
I hope these tips will help! Good luck :)
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