What are NFTS? First off, NFT, stands for Non Fungible Tokens.
Fungible means things that are interchangeable, an example is dollar bills.
Assets like diamonds, land, or baseball cards are not fungible because each unit has unique qualities that add or subtract value. Works of art are Non Fungible because each piece has a unique quality. This includes digital art because each image will have it's own digital signature if you will.
My collections are Limited. I only sell 1 for 1 images. They can be purchased through Foundation.app/yariedesign and Opensea.com/yariedesign sites. The images on Foundation.app/yariedesign are animated so take a look.