Though not included in the original tutorial, it is best to attach a chin strap in order for the hat to be wearable by active kids. Once the paint dries, punch a pair of opposite holes near the bowl's lip. Knot the ends of an elastic string around the holes. Adjust the length of the string for a snug but comfortable fit.
Make a braided yarn topper for your hat. The steps for making one are quite easy, check out our yarn hair tutorial for details.