Photoshop Tip

Always save your finished file as a Photoshop file with all the layers. Then go to Layers, Flatten Image, and "Save As" a jpg or pdf or whatever type of file you need. This way you always have your original Photoshop file with layers to go back to. I've found that if you only save your file as a pdf or jpg and not in Photoshop format, you may not be able to open those files later without an error message.