I'd say be careful with the photo shoot, if it's someone else taking the photos I'm not sure how he will take someone else taking pictures of you naked as his surprise. I know some guys can see girls as their possession and get easily jealous when put in a situation like that. I'm talking personally here. I think if you want to explore something sexually, I'd say make him feel very desired. The photoshoot seems to be a bit more about your self and he just gets to choose the side product. It's almost like sharing a bottle of beer, drinking it all then giving him the lid. The photoshoot is the exciting fun part y'know. Probably a really bad analogy but that's just how I would feel personally.