If you have a printer/scanner/copier you can scan in the pieces and manipulate them as you wish. I've taken pieces that I've scanned and doubled the size, then added the bits of the original image to get the hole pattern correct. I suggest saving the scans in greyscale or b&w rather than color. I also add pieces of paper with "information" to the scans, so the image has the name of the pattern, the rough sizes, etc. You can add this later in your photo program, but I'm taking notes anyway, so the snippets of info are already available.