Any NFT that you own can be sold with a few simple steps.
Head over to the "My NFTs" tab in your Profile. Here you should be able to see all your owned NFTs.
Click on the "Sell NFT" button to put your NFT up for sale, at a price of your choice.
Keep in mind that a service fee of 2% will be added to any royalty fees set by the creator displayed before listing.
We also have a great video on this topic on our YouTube channel, if you need some extra help!