Typically, copyrights do not do much for most crafts. Expense and time can take away any benefits you receive from copyright protection. However, if you have unique creations that you intend to mass produce, you may want to consider copyrighting your work. But remember, copyrights do nothing without enforcement. I recommend a good attorney to help prevent any infringements on your creations. If that sounds expensive and time consuming, that's because it is! it is!