Pattterns Are Fun
You don't need a printed worksheet for your child to make/practice patterns. Make your own pattern sheet for your child, by using different shapes or pictures and colors. Make them simple or complicated depending on the age of your child, and then let them at it. Ava loved finishing the patterns I created for her. It gave her practice in more than just identifying patterns; she also used her knowledge of colors, used her drawing skills, and even did some spacial planning.