model language

I just realized a technical difficulty with my photoshoot tomorrow.....(other than the fact that nothing really is working)
--I'd already decided to talk in French and only in French. so how am I going to direct my model?? how will I direct models in the future???
ugh... and my french friend Van is helping me with the shoot, and I'd already denounced all use of English with him, and if i talk to the model in English, that's going to loosen our French Only Pact, which was made yesterday and already broken today, no need to break it further tomorrow.