For a full screen version on the video, click on this link. it will take you through:
1. Cropping the image to a 4x6 image. (be sure to change the aspect ratio first.)
2. Then click adjustment and desaturate
3. Then click adjustment and posterize (be sure to make it have 4 layers)
Then, when you are ready to print,
1. open up your number
2. click on your edited photo
3. click Share at the top of the window
4. click print
5. click 4x6
and print!