I stop interesting faces on the street, ask them to come to my studio...some really do. Try to add value with some story, use a gadget if possible, something that does not belong: old fashioned sunglasses, crazy dress combination-one model said: Wow, i can use this combination, that's cool ! Really an inspiration if the model is enthusiastic about the concept, otherwise it is a very stressful situation, final obstacle being the personal freedom and attitude of the model... It is also a very intellectual affair, strong intuitive process.
