Potential images for my film poster

If I do choose to go with using a school blackboard as my background image then obviously I had to use an original image. It was actually a lot harder trying to find a blackboard then I originally thought it would be, there werent any at school and I thought we had quite a big one at home, however all I could find was this small one. Im hoping that it will be okay to use once photoshopped, and cropped etc!

The other images I want to use it by creating the effects of the little black sticky labels that are often used to name and title things on folders to be a small background for the writing.  This again ties in with my font being in Courier New, which is has been all a long on my film. Im hoping it will look quite effect.

If I can I want to try and blurr out some of blackboard and layer an image behind it. This will signify the corruption theme within my film. However i'm not sure what image to use yet.