Find some photos that can feature your model and the context. Give an idea to your viewers of how this thing may look, how it might interact on a site and all that good stuff. No one wants to hear how your project will do this or that. More likely, they will believe what they see.

In getting site photos, you should have an idea of what side of the building your composition will feature. Maybe the lighting of that view is important. There are many things to keep in mind as you choose the pictures to take. This is one reason why its suggested that you use a digital camera. You can take a lot of pictures and select from many. In case you change your mind, in case 2 photos of that side aren't enough. This can be done with film. Obviously it costs more and you are less likely to get just the right shots in 24 exposures than hundreds that you can take with a digital camera.