Thanks for the positive comments. Just chopped the original front guard down, shaped it with a sanding wheel and sprayed it satin black with a rattle can. Couple of stainless bolts and washers instead of the original rivets.
I must admit that I'm pretty pleased with the way the bike has turned out. I didn't want it to end up too 'shiny' as I'm quite keen on a bit of patina (and I'm lazy!).