Once you have all the materials together you can start playing around with different pom pom combinations and placements. I started with the big colorful pom poms and then added the little white ones after. Once you've come up with a design you like, simply pin the poms in place and start sewing them on! I found it easier to sew the white poms to the colorful poms before attaching them to the jacket, but whatever works for you.