https://soundcloud.com/julian-krohne/dubstep-for-reddit-wip

Me and someone else are working on this for the reddit collab competition (nothing serious, just getting experienced by working with others).
It was supposed to be chillstep and now we need feedback (as i am quite a beginner, most problems are probably found in the mixing and mastering area).
What i know that this needs: fills in the first half of the drop and decent crash cymbals (still didnt find any decent samples ).

Thanks a lot!