Felt is a very easy material to work with, and, if you are just getting into sewing, it's an ideal fabric. It doesn't fray, it runs through a sewing machine easily, and it's very forgiving. All wool felt is very expensive, so unless it's a project where I specifically need 100% wool, I either used a blend or use synthetic (especially for projects that the kids might end up trashing). For the crown, I also used a little bit of elastic for a better fit and room to grow.