Its alright. The drums, if they are drums, dont sound all that good. Also the Slayer sounds......dead. You need to put effects on the slayer and if you do have any effects, make them better :P
Use a Parametric EQ, and fiddle with that.
The drums also need to be louder and not just be a snare drum. Atleast thats all I heard anyways.
The tune was pretty cool though. But there was no change in the song, and also there was no other instruments besides Slayer and Snare, so that made it sound like something was missing.
But Besides that it was okay, for a newbie.
But your gunna have to strive to be better my friend.