where did you get the images on the wall?
You can find lots of pictures on Google, but http://www.therpf.com/ has tons of actual Hogwarts photographs on the Harry Potter boards. I just printed out antique looking frames for the photos and then glued each picture onto cardboard. I have most of the photos pinned to my Harry Potter Classroom pinterest page so you could also find them there.
Great Ideas!!! Thank you!!