After browsing around the Internet, I came across this superb tuturial about flash photography. Despite not having all the kit that is described there are some excellent tips and good theory in the 5 lessons, I would certainly recommend spending half an hour looking.

The penultimate lesson discuses PP and had this nifty trick that I had not come across before for making the white background of a shot look a bit funky.

The Kernel

Cocktail on Blue