I am trying to make these posters (for a class) on photoshop and I want them to be the size of standard paper (8.5x11). When I put 8.5 inches by 11 inches into 'image size' on photoshop, however, it comes out way too big. Like at 100%, the image is probably twice the size of a standard piece of paper. The image is 200ppi. Any suggestions? I need this to print correctly, and it needs to be accurate on photoshop so I can see how big the text is and stuff before it prints.