So am about to undertake a whole load of illustrations for a greetings card company based in the south of England.... I'm getting the costs/details finalized. I'm asking for set payment cost per card (there's 11 in the range) with 50% in advance. They have given me the option of part payment and part revenue share....does anyone have experience of this?. Which is the best way to go. In the past I've just taken payment. Thanks people.