Here is a quick and dirty master on your track as an example reference that you might find sounds a bit better:
https://instaud.io/hawMulti-band compression and limiting, eq-ed to boost and shape the kick, take out some low mid, high boost around 8khz and gentle roll-off on upper frequencies. Would need a target reference track and more time than the 5 minutes I spent on it to make it shine, but the improvements needed are really in the mix and not post in mastering.
The first thing to think about here when mixing is to, in general, keep space in the frequency spectrum for each of your instruments in each octave (
http://www.recordingeq.com/EQ/req0400/OctaveEQ.htm). Get a good eq that will allow you to solo each octave, and do so on each instrument, so you can hear what is going on.
In your track there is a lot of competition in the lower octaves. Try muting your pads and see what the lead synth sounds like with just your kick. The lead probably needs to fatten up and be SC compressed to the kicks, which also need to be shaped up. Get those to sound right first before finding room to add the pads back.
HTH!
