Layers and Compositing

We recently had an interesting project that taught us how to compile six images into one image. Photoshop was used to get every single image to have a transparent background. There were a few tools we used such as the magic wand tool that automatically selected the defined parts of the image. But we could not use this on every single picture. For instance the sheep in the light bulb; we couldn't just use the magic wand tool the select what was needed. Instead I used both the magic wand and regular selection tool.