I love track arrangement and design, got potential mate! Bass works pretty well and a vocal sample is kinda funny and appropriate for this tune. One thing I am generally very critical about in any dnb track is the energy of the drums. Unfortunately these drums here are non-existent. Few tips how you could go around this issue:
1)Bring bass down by a great amount
2)Bring up the volume on both kick and snare
3)Sidechain both to bass
4)Find a great kick and snare samples, you see great drums are approx 90% sample choice, aim for solid punch at 200-250hz for snare and approx 90-100hz punch for kick(these are peaks of them, if you don´t have a frequency analyzer, get one, SPAN is free and generally works well, stick it on a master and see what is the frequency content of samples you use)
5)Boost a little(max 3dB, let´s not go extreme) in the peaks for snare and kick
6)Add a little bit of distortion on snare(tube or tape)
After these steps you should have a better flow and energy for your tune. As I hear and feel, kick should be the main element in this track so bring it forth. Hope that helps!