Some tips. So you're going for a "dark" style. I'd stay away from high pitched warm synths like the one you have. I'd also use a thicker punchier kick and snare to really go along with the bass. I like the bass though it seems kind of boring and unsatisfying. Not that it's bad it just needs some work. (: may e so e distortion or a bit rusher can do it justice, or even raising it an octave.