I know how that feels - I finished the neck for my first one and then as I tapped in the little ferrule thing for one of the tuners the headstock split right down the middle - but I managed to salvage it and now claim the new headstock shape as my own copyright shape :) I'm thinking that this time I might buy some tools.
Heh, I got my first done a couple of weeks ago, only to realize that in my excitement, I drilled the peg holes too close together. Now I just have to find time to make a new neck and I'll be right as rain.
Welcome aboard, Nigel! You will find lots of helpful folks and information here on all things CBG (CBU, CBB, etc.) Feel free to poke around, ask questions, and post your stuff (photos, recordings, videos, etc.).