I have an image that was photographed in 3:2 aspect ratio and I want to blow it up to 8x10. Unfortunately, if I attempt to do this in the current form of the image, I have to crop off essential parts. Instead, I would like to add onto (or build out) the sides of the image so that I produce an image at 5:4 ratio (but somewhat larger than 8x10) and then crop it to 8x10. The image is of a person seated in a chair next to a window with a backdrop of blank wall, so I would have to build onto the window on one side, hardwood floors on the bottom and blank space on the other side (wall) and top (ceiling). I found a tutorial that showed me how to do this when the center of the image is surrounded by blank or neutral space, but none that shows me how to do this when the borders are not all neutral. For example, how to I add onto the hardwood floor at the bottom so that the pattern of wood flanks in the floor is repeated realistically? I am somewhat inexperienced with photoshop. Can someone tell me -- or point me to a tutorial that would tell me -- how to do this? I am not even sure what terminology to use for this kind of operation, which may be why my web and book searches have not been successful. Thanks in advance!