On the Etsy app for iOS and Android
On the iOS app, tap You > Purchases and reviews.
On the Android app, tap the three line menu and then tap Purchases.
Find your order and tap Edit Review. If you’re editing a photograph for a five star review, you’ll have the option to edit the photograph as well. If you lower the rating from five stars, the photograph will automatically be removed and you will be required to leave a minimum five word review.
Learn more about Etsy’s Review System.