Read this carefully and don't take it personally:
The mix is totally cluttered; the sound design is weird and it is very empty in percussion. "Kick, snare kick snare" oh boy. You need more variation without cluttering the song. Less is more in many ways with the perfect mix. Also make sure your sounds are not overpowering your drums in the mix like they do in this preview. From what I have learned recently, it is better to let the drums impact a lot more in a hard dubstep track.
The worst part about this project is that you used GD as a way to get attention. Pathetic. If it was any good, you would never have to do that.
Don't worry about the project file being gone. You can make much better stuff in the future. The intro was kind of nice but needs a more calm intro to lead into it.
Don't use random clips of this song for a reboot of the track; if you really want to make it good it should just be recreated when you have an abundance of experience in music production (especially in sound design). You have every right to want to make this project awesome, but it will take a lot more time.
Keep practicing and this idea can become something much, much better. Good luck!