Hmm, looks like it's going to look pretty sweet. It could use a bit more detail, unless you're aiming for that look of course. I can't really criticise on it right now, as it is at its starting stages. But yeah, I stick to my word on more detail.
All you need to do now is, more detail, colour it, shade it and so on. Nice work so far mate. 7/10 at the moment.