Cool song but...
Sounds a bit "The Libertine's"ish which, if thats what your going for, you've done pretty well.
Improvements
- Add drums. I realise thats not a very useful piece of advice lol but i think me and you both know they would work well here regardless of what other reviewers have said.
- If you don't want to add drums, take any distortion or overdrive off of that guitar and turn the volume down. Even if you do add drums, still the guitar volume down.
- Like the vocals but add some reverb, to them and mess around with them a bit. Stand a bit further from the microphone.
- If you add drums, make sure you add a good catchy bassline.
I've done and do some pretty similar stuff to this kind of music and i do kind of know what im talking about, im not just an a-hole. Its a really good song though mate, its just you asked for ideas to improve and i listed a few.