Anyway, he seemed to work out alright:
I have since gave him a coat of 'ardcoat, and don't plan to use any dullcoat, as I want him to be a bit shiny. I think it works with the fluorescent paint, and the spectral look.
I'm going to hold off posting the second one until I have handed it back to it's rightful owner. Don't want to be giving away the surprise! However it's not a huge leap from here to imagine what the final exchange mini looks like.