Where do I revise feedback I've given for a purchase

[biggerchicken]

Where on Ebay can I revise/change a negative feedback for an item I have purchased?

[pjcdn2005]

You seem to have a lot of bad luck with your purchases.

You can ask the seller to send you a feedback revision request.

[femmefan1946]

I read your feedback.

Gosh.

[femmefan1946]

You can't.

You can add a Response which will make the negative less painful for the seller, but she's still stuck with that red donut.