Pointers on blending models into a scene.

[blom]

Hey all..

Just doing this shoot for a client who wants me to photoshop their models into some scenic shots of mountains and such, and I was wondering if anyone can give me any tips on how to make it look realistic. So far I´ve been trying to match the angle/perspectives, light, etc. In post I guess I´ll add shadows, match the color temperatures and put some kind of general treatment to make the all fit. Anything else I could be doing?

Thanks in advance /B

[ShadowLight]

don't forget to bleed.... colour bleed that is
but it's hard to say if/how much is required without seeing the scene