Wine Shop commission - sketches and drawing

I've been commissioned to design a logo for chap who's opening a new wine shop.  The photos show the process that I've gone through so far.  Initially he thought he wanted something circular, but after seeing my first very rough sketches he decided that something less 'organised' would be better.  So although not hugely different, we've gone for a square design instead with a much more organic and random feel to it.

I'm about a third of the way through the final drawing (on the reverse of the black paper) and already I'm itching to get started on the cutting!  But I shall control my urges, be good and finish the entire drawing first - not something that I usually manage to do - but should!!!