I made a mistake — can I edit or delete a minted NFT?

No. Minting writes to the blockchain, and that record cannot be edited, replaced or removed — not by you, and not by us. The name, the image and the traits are as you submitted them.

What you can do is mint a corrected one, and either keep the first or transfer it away. This is why the form shows you a preview: it is worth reading it over once more before you confirm, because that is the last moment anything can change.