Share 'Etsy acounts for kids'

My 7year old DD would like to start a business. We have settled on hand made greeting cards and are planning to sell them through Etsy. I was wondering if anyone had experince with setting up a business for their child on Etsy and how you went about it. Did you attach it to your own accounts or create a bank and pay pal accounts for your child so they could use their own money for fees and suc...