Played around with an image I use in Chit Chat Chums, here is the base image:

Here is the results, I lasso and copied the dog on the left and moved him to the right, then reverse the image and rotated his head a bit. I then lassoed an arm off another dog and gave my purple dog an arm which he never had before. I ran into trouble early when I cut the original dogs head out, it left the transparent pixels (checkered grays and whites) behind, not a white background. So I created a new image with the same dimensions and a white background. Copied my base image onto the new image. Now when I cut my lassoed selection there was a white background behind it. I learned something, so it was a good day!