I have two rectangular .jpg images. I would like to create a composite image that contains both of them. In this new image, the left upper part is from the first .jpg and the right bottom part is from the second. In order to create this image, I believe I need to do a diagonal cropping of the original images. In other words, I want only the top left half of the first image and the bottom right half of the second image. I did a google, but didn't see any tools that allow for this diagonal cropping. Also, the...