Mistake - I marked negative a positive review Then submitted.! Seller told me

[shipscript]

To change your feedback from negative to positive, the seller must initiate a "feedback revision request".  The seller can make that request through eBay by clicking a link on their own feedback page or by following the instructions on this page:

https://www.ebay.com/help/selling/leaving-feedback-buyers/disputing-feedback-received?id=4102

eBay will then send a form to you, the buyer, allowing you to edit your feedback, as described here:

https://www.ebay.com/help/buying/leaving-feedback-sellers/handling-feedback-disputes?id=4030