Well, itroitnyah said basically everything I'm probably about to say, but I'll say it anyway.
Clipping. Everywhere. Do not boost volumes just to make something more prominent. Make drums more prominent by either a) getting better quality samples, or b) EQing the samples in a good way (look around either here or Google, there's hundreds of EQ tutorials out there). As itroitnyah (god that name is hard to remember how to spell

) said, that crash has no presence whatsoever.
Now for the synths. That bass is clipping, and the synths before the drop are generic at best. The melody itself is fine though. As for the drop, presets. Probably. There was a wobble somewhere in there but it was too quiet to make out. Also, not sure if there's really a sub there at all. There's nothing wrong with using presets, just don't make it obvious like it is here.
Overall, the mixing is bad. The synth in the beginning is too loud (subtractive EQ should fix that), and almost everything is clipping (as it and I have said). I'd advise you look up some tutorials on sound production as well as music theory, especially tutorials on mixing, mastering (a bit later down the line), and EQ especially, but make it a goal to learn what every effect does and how it works. The vocal glitching is meh. Not good or bad, just meh. It doesn't really fit in with the song, sounds out of place and, as I said, meh.
Invest some money in decent headphones. If you've got a fairly low price range then you should see about getting Audio-Technica's M30s, they're only $60 and they're some of the best in that price range. Other than that there are several headphone threads here as well as on other places in the 'net. And please,
please drop the 20% cooler sample. It's almost as overdone as 'it's over 9000' or 'this is sparta'. Don't name it 20% cooler either, we've already got several songs named that. And 20% Faster. And 20% Louder. And 20% whatever.