Thanks jiminy I've tried that and there's a couple of problems there:

1. As I jump between scenes, the matched photo appears before the model rotates to the right position and obscures the model to the viewer so it's hard to Understand what is going on (is there a way for the matched photo to appear later?)
2. When I try to export to, say, pdf 3d, I can't find away to export it without losing the matched photo.

Will appreciate any ideas

Hey Guys, I'd appreciate any advice.
I'm an architect and I use a lot of digitally drawn sketches(photoshop) in my process.
What I'd like to be able to do is give my a client a 3d mockup of the design with my sketches inside.

What I imagine is a very basic 3d model that the client can explore and a bunch of camera angles - each with a projection of the relevant, more developed, 2d sketch on top of the model.
I've explored the different possibilities of importing images to sketchup and played with scenes but couldn't find exactly that.

Perhaps that's pushing it but I would also like to be able to export the whole thing to some sort of web format in case the client doesn't want to install sketchup.

Many thanks