In September 2021, as NFTs emerged as a cultural phenomenon—from kitten memes and auctioned tweets to collages selling for tens of millions of dollars, with specialized galleries appearing even in Italy—a practical guide addressed the mechanics of creating and selling these blockchain-verified digital works. The term NFT, or non-fungible token, denotes the uniqueness and non-substitutability of the asset, guaranteed by encrypted certificates using blockchain technology.
Setting Up Your Wallet and Collection
The first step is creating a digital wallet to hold both NFTs and any cryptocurrency received from sales. MetaMask is the most well-known option, though Bitski was found to be simpler for beginners. Opening a wallet requires only an email address and password, with no need to purchase Ether upfront. Once the wallet is ready, users can create an NFT through OpenSea, one of the few platforms allowing this at zero cost. After linking the wallet, creators name and describe their Collection, then click Add New Item to select their digital asset—images (JPG, PNG, GIF, SVG), video (MP4, Webm), audio (MP3, WAV, Ogg), or 3D models (Glb, Gltf)—up to 40 megabytes in size.
Configuring and Selling Your NFT
During configuration, creators specify the asset’s name, description, a linked URL (social profile, blog, or podcast), and the number of copies to generate. Once created, an NFT can be gifted to wallet holders, shared via link or social media, edited before ownership transfers, or sold. The Sell button allows creators to set a price in Ether, choose between fixed sale or auction, and establish royalty percentages. However, in crypto art, the creator’s reputation typically drives value more than the work itself; unless the artist is already famous—like Jack Dorsey, Beeple, or Grimes—substantial earnings should not be expected immediately.
Frequently asked questions
Which platforms allow free NFT creation?
OpenSea is one of the few platforms that permits NFT creation at zero cost, making it accessible for beginners without upfront investment.
What file formats does OpenSea accept?
OpenSea accepts JPG, PNG, GIF, SVG, MP3, MP4, WAV, Webm, Ogg, Glb, and Gltf files, each not exceeding 40 megabytes.
What determines NFT value in the crypto art market?
In crypto art, the author’s reputation and existing fame drive prices far more than the artwork itself; new creators without established names should not expect significant earnings initially.