I've got an existing model and I'm trying to position it to match an image.

I've been trying to follow some tutorials on this but

1. They are mostly focused on building a new model.
   and MORE IMPORTANTLY
2. The photo is mostly hidden. I can get tiny glimpses of it. For some reason, some surfaces of the model will show the photo through them, but it's not nearly enough to work with. And if I turn the "model" check box off, it just shows the grid and perspective lines, the photo is NOWHERE TO BE SEEN.

Is there a way to put the photo up front where I can see it or something?