How To Create NFTs and How To Sell Them?

Recently, I have been diving deeper into the crypto community and trying to learn more about blockchain technology. When it came time to create NFTs of my own, I could not find a simple and concise guide on the proper steps — so I decided to share what I have learned. This guide will teach you the simplest way to create NFTs on your own and sell them in a marketplace. But first, before we can sell one, we need to understand what exactly NFTs are.

What are NFTs?

A “Non-Fungible-Token” also known as NFT is a slice of unique data that is stored in a blockchain. NFTs can represent digital ownership of pictures, art, audio, videos, and many other types of files. They can publicly certify the authenticity of the digital file. The crazy thing about NFTs is that by using a cryptographic hash function, anyone can track and verify the NFT’s ownership and authenticity.

Terra Nullius is the first NFT on the Ethereum blockchain with a mint date of 2015. NFTs started gaining popularity in 2018 when you could find some NFTs selling for over $100,000. Since then, the prices have gone drastically up and down and back up again, helping many people achieve financial success.

Creating A Wallet.

There are tons of crypto wallets such as Coinbase, Binance, etc. But for this tutorial, we’re going to use MetaMask. The reason behind using MetaMask is that it is available as a Chrome extension, iOS app, and Android app Also most of the people creating NFTs use it. Here in this tutorial, we’ll learn to use the MetaMask Chrome extension which is used to mint the NFTs.

So firstly head over to MetaMask’s website:

From there install MetaMask in Chrome as an extension. After the installation is completed you can access it from the extensions navbar in Chrome.

On the wallet, you can send as well as receive your funds. You can also swap between the tokens. If you click on your account name you can get the wallet address for this MetaMask wallet.

“Congratulations on creating a crypto wallet with MetaMask.”

Connecting your wallet to OpenSea.

OpenSea is an online marketplace for non-fungible tokens. It is widely used by the NFT creators for selling their NFTs. SO for creating an account go to OpenSea.io and create a new account. Using a web version instead of the mobile app is recommended because you can’t mint the NFT in the mobile version of OpenSea.

Once you’ve signed up click on the wallet option as shown below:

Now this will open the MetaMask via Chrome extension. This is what gives your wallet access to OpenSea and signs the NFTs with your wallet address so that you can list NFT as your own.

Creating NFT collections.

Now to create NFTs on OpenSea, you can create a “Collection”, which is basically a grouping of NFTs. Under “My Collections” you can view your existing collections or you can create a new one:

To create a collection, you need to add a unique name and a logo.  If you would like to make money off of the NFT transactions, you can specify a royalty percentage (up to 10%) that you as the creator will get when there is a transfer of your NFT. You need to choose which blockchain the collection will be on. This guide is based on minting NFTs on Polygon Blockchain.

Once your collection is created, you can begin to mint your NFTs into it!

Minting your NFTs.

On the home page, you will have a “create” option in the top-right.

Now, on this page, you need to attach the file for the NFT that you would like to create, along with its name. You can optionally add a link or description along with the NFT, as well as add it to your collection.

Now all you need to do is that you need to select which blockchain you want to deploy the NFT to. There are two popular ones. Ethereum Blockchain and the Polygon Blockchain. There are pros and cons of both.

The main difference between them is that Ethereum Blockchain will cost gas fees while listing on the Polygon Blockchain will not cost any kind of fees. So if you’re planning to mint on the Ethereum blockchain you need to make sure you have some ETH in your wallet. Additionally, on the Polygon Blockchain, you can list an NFT with multiple copies of it.

Now clicking on the create button will mint the chosen file into NFTs.

Selling NFTs

After the minting process is completed you’ll be able to see the sell option in the top right in your OpenSea account.

Here, you can select the sale options, which include how many you want to sell (if you minted multiple copies), as well as the price. One neat thing about the NFTs is that you can collect a royalty for every transaction on them.

After clicking on “Complete Listing” a message appears to sign in using your MetaMask wallet. This will automatically open your wallet, where you can sign the NFT with your address.

Signing the NFT will complete the listing, and your NFT will now be available for sale on the OpenSea Marketplace!

Conclusion

So as you see to create and sell the NFTs is not that hard. It is easier than it seems to be. With just a couple of clicks, you’ll be able to create your crypto wallet as well as your OpenSea account and sell them via Polygon and Ethereum Blockchain.

Thanks for reading this article. I hope you understand how to create NFTs, how NFTs work, and how to sell them.