Maya image planes try out

I have put all my matte paintings into the scene with my first almost existing model and rendered it just to see what it would look like. The colour of the model is awful for obvious reasons (and much darker in Maya than in the render) and will need lots of photoshop work, and I need to get the remaining parts of the concept painting to fit with Maya.
If there is anything wrong with how I used the image planes, someone tell me please! :)