I should just bus over to your house and teach you how to use the thing [finally, someone in Seattle. There's only like 1 or 2 of us here, not counting the many Shizzies]
Though, this isn't bad at all for a first remix, I guess. Is this the first thing you've done EVER or is it just your first remix?
The good:
-BLAKE STONE!!!!
The bad:
-The synths sound kind of preset-ey
-extremely repetitive. The short and simple melody repeats ad nauseum for minutes on end, with a bassline breaking the repetition a tiny bit in the middle and at the end. Basically, the song could've been 1/4th as long and you could've gotten the point across. Also, you have a 1-measure drum pattern that does not change for the entire song. I recommend learning about drum fills and things of that nature.
-the song doesn't really have an ending. It just stops at 6:04 and that's that.
-lol, Slayer. don't use this ever