Carrie you may have the best answer to this.. I did not know what would be the best policy to have for returns.. this is what I put in my 'msg to buyers' box. Oh yeah, and I upped the shipping cost to $5 upon you recommendation.
"Thanks for purchasing my creations! I hope you are happy with your order. My return policy does not include shipping cost - but 100% refund for the product if you are unsatisfied. All items returned must be sent back to me within 30 days of the initial transaction to refund the purchase."