Fees on Etsy are pretty low. The listing and transaction fees are far lower than I think you'd find on any large successful ecommerce website. The direct checkout fee is lower than what PayPal charges. But I guess since you sell small items, the $.20 listing and $.25 direct checkout fee are high, percentage wise. I'd say just raise the price of your items by $.50 to cover it. Your earrings are so cute and unique, I can't imagine anyone not wanting them because of an extra $.50.
And awesome for you for having so many sales so fast! Do you do a lot of promotion?