yuo can use a proportional selection / croping method to restrain the proportions you are takeing fromt the original to put 4 images on an 8 x 10 to save some hassels select the area of the face with the ratio's 8x10 when selecting.. take them into your new document... make some guides 50% horzontal 50% vetical.. put the images corners so they meet in the middle.. Zoom out and Transform scale... the % for both width and height will stay the same if shift is held down.. the end efffect will be four " 4 x 5 ' photo's with a clean break through the centre..