a local underground rap group has contacted me today, they need photos of one of their rappers and if they are happy with the results they'd hire me for more shoots in the future. i'm confident that i'll get a great shoot but i really want a good idea of what i want before i get there. any tips for this? i was thinking a tunnel full of graffiti or something as a location.. as for gear, i have an umbrella, one off camera flash, a 70-200 for tele photo and 28mm for semi-wide any tips for lighting, technique etc...? thanks so much!