(EDIT: Just added another photo down the bottom)
I just realised I hadn't given credit to the photographer. He is 'Canadian Pacific' on flickr. On his profile he gives permission to use his photos for personal use. (Note: Always make sure you ask first before using someone's photos if you find something on Flickr, or you might get in trouble!). Here's his profile page if anyone wants to browse his photos!
I printed out the sky part of the landscape photo, to put on top. Now lower angle photos can be taken too, without seeing the plaster wall! Placing some of the scenery so that it hides the spot where the picture touches the grass mat is a good idea - helps make it look like a seamless transition into the background :)
Having lots of fun taking photos today :)