it's a good beginning the start is a little to dry i think.you might add some more fx there.i think you should master(limiting compression,..) the whole also better to make it more as one .the arppeg melo is sometimes to loud check your exported wav for louder parts.the beat:kick should be more in front of the mix together with the snare i think.mind your frequency spectrum give every sound its frequentie.watch out for to much sounds in the same frequentie range.that's as far i can help you for now cuz i self am still workin on my mastering skills(it's realy a science on itself but feeling plays an imported part,listening..take some of your favourit idm songs and listen them over and over again).greets