Does anyone have tips or tricks?

So my boyfriend is a photographer…. I’m bisexual and he wants too do a photo shoot this weekend with me and my bi flag. I’m NOT photogenic at all, I hate being in pictures.

With that being said does anyone know what I should do? How I should go about this? Maybe what I should wear. I usually dress like a Tom boy and don’t care what people think. But I’m thinking maybe I should dress different? I’m not sure. Anyone have any advice?