I think it would be worth bringing all the levels down, and slowly bring in your most important sounds (but leave plenty of room preparing for the possibility of increasing levels later on) so they git a little harder (I say this is the nature of your track is more aggressive compared to say 'In for the kill' Skream rmx). For me this would therefore be bringing in the snare 1st, then the bass 2nd, and then your main sounds (leaving the bass till last) untill they sound dynamically balanced. Then the background sounds, h@'s and reverb adding in the space and depth to the mix. All this is ofcourse the way I do things and everyones way of working is different, this isn't the definitive way lol. Otherwise, I think it's good
Also I think it's a good idea to have your own plan before thinking about getting signed as this shows that you are commited to the game, and are willing to pull your own weight before people begin investing £ in us, you also begin to understand what it is that they do better (if which I'm assuming you might not?). The BBC has got some good advice on starting your own label (while that isn't nescessarily your intention), you can grab some promotional tips off their. Otherwise grab labels AIM accounts and get talking/sending them out and evaluate them.
SPACEKisBEAST is my aim. sometimes i just feel like i cant give proper mixdown advice from a youtube, so i dont just wanna go and say something that might just be because of youtube more headroom never hurts tho thats for sure