It's definitely on the right track! My suggestions for improvement would be as follows:
1) Add more variety. I understand it's Dub Techno but it still has to keep the listeners attention.
2) I think some clicky glitchy perc type sounds sprinkled over the top would sound great.
3) I had to listen with headphones because it's so late, but I couldn't really hear a strong kick.
4) Those Dub synth lines sound great! Nice n housey!