Here is a fun shoot that will take a while to make, but once you get the images you will have fun editing them in Photo shop.
Step #1 find a big tree.
Step #2 Shoot the image with the sun is directly over head. So the shadow match in all 4 images.
Step #3 Use prime lens like 50mm or 24mm. Or with a zoom lens leave it at the widest. Otherwise you will get zoom distortion and it will be impossible to line up the other images in Photo Shop.
Step #4 Take notes. Camera settings, Lens used, Focal length, Tripod height. With your phone take photos of your camera and tripod. So you know exactly ware you had it last. This is important to line every thing up.
Step #5 Photo Shop them together.