Hello friend ! =3
Melodies :
Now I know you're capable of making melodies, I heard one in This Is The End, so you ought to add one to your track. I'm sorry but there is just none. There's a sound effect, and then there's the dubstep moment, but the non-dubstep parts in dubstep musics are meant to be for melodies. You should work on one, that will remain Dinosaurs' melody.
Instruments :
The sound effect at the beginning is great mate, but it's played too many times. It's like you found a cool effect, and you wanted to show us how great it is for 28 seconds. Both your kick and your snare are too weak, you should higher their volume. The transition with the voice at 0:28 seems inappropriate : it's about dinosaurs, there can't be humans. Your mixing is okay, but try to vary your dubstep effects.
Personality :
The track suffers from a lack of melodies and of variations. Without melodies, the track looses a huge part of what it should be, because melodies are maybe the most important things in music. Without a melody, we can't remember this track forever, and this is what you should be aiming for.
Melodies : 0/2
Instruments : 1/2
Personality : 0/1
Sorry for the low score, I'm really not trying to make you angry, just trying to help ! I'm sure you'll continue progressing. =)