Here is a picture of what I was doing. At the top if you notice the stitches are singles. Down below they are doubled. Same card just a flip of a switch that elongates the pattern you are already doing.
Marilynn showed us how to switch colors while using a punch card to make a picture in your knitting. She got this pattern from an old English Machine Knitting magazine. SO CUTE. She gave me the swatch to take home.