Yes, you can add tags to both new and previously minted NFTs.
Click the "..." icon on the artwork card from your profile page.
Click on "Add Tags."
Start typing in the "add tags" section
Type in any word or combination of words
Tags are optional
Click the 'Skip' link in the bottom right hand corner to skip forward
If you choose to skip tags now you can add them later on
You can enter a maximum of 10 total tags
Please review the tags you have added
If you made a mistake and want to go back click 'Edit Tags' to be taken back to the previous step.
Click continue once you are finished adding tags.
Review your tags and click "Confirm."
From here, you can choose to go on to list your work for auction or you can wait to list at a later time.