A second type of before and after depends on your angle of view. I'm teaching an Illusion Knitting class at the Guild in January, so I thought I'd better make a sample so people will see what they're signing up for. We're going to make knitted dishcloths with illusion designs. They'll be able to choose between a heart (pictured here) or a snowflake. If you look at the cloth straight on, you see nothing but lines of red and white. At an angle, however, the heart picture pops miraculously out at you.
Last, we just have an after. Here is a picture of the first small skein of pure angora from Genevieve. I expect her wool will get a little lighter as she grows older -- she's just turned 6 mos. old. The wool we harvested from her was definitely her junior wool.