lacks in several things and background elements. Don't use samples if you don't know how to shape designs.
Reviews for "Skrillex - Scary Monsters and Nice Sprites ~ JK Remix"
I can't give you points or commend you on arrangement, because it's much less of a remix and more of a recreation.
Mixing seems like an afterthought, if present at all (doesn't seem like it).
"Wobble basses" were arguably deprecated from the dubstep scene long ago, you need more original sound design. Piano lacks any character or space, making it stick out like a sore thumb.
i just dont like the drop i think its terrible but thats just my opinion