How to create NFT ?

If you need to design or create your NFT it’s not too difficult. The term NFT (non-fungible token) usually refers to a cryptographic asset on the blockchain that represents the non-physical product and unique digital file that can not be substituted.
NFTs are distinguished from one another by Metadata and unique identifiers like a QR code. The information that makes up the asset is known as metadata which allows users to buy or sell objects based on their metadata.

• Design your concept

First step you need to know what thing you want to create, such as a 3D profile picture, song, abstract art, the spacial picture you took, some meme, etc. In the end, though, it doesn’t matter what you want to turn into an asset, as long as it can be fit into some kind of digital format. If it’s already a digital file (PNG, GIF, WEBP, MP4, JPEG ) can be used at all, but if your project is physical art you need to take the best picture and convert it to JPEG.
Then you have to plan your project direction that you want to sell (one by one or collectible). Or create your NFT community (Discord, Twitter, Instagram, etc.) to promote your NFT by creating a roadmap and airdrop giveaway. Those also can make a big value of your NFT.

• Choose your blockchain

You need to make sure you have a crypto wallet in your device (such as Metamask, Math wallet, Alpha wallet, Trust wallet, Coinbase wallet) with the currency your platform’s blockchain. All of the NFT auction platforms mentioned above will want to pay upfront to mint an NFT, which is the process that turns your artwork into a non-fungible token that you can sell.
Ethereum (ETH) is the most common currency used because it’s the native cryptocurrency of the open-source blockchain platform, but some platforms starting to use other blockchain payments, such as MATIC (Polygon), SOL (Solana), USDT, etc. You’ll need to connect to your chosen NFT platform to make payments, such as Ethereum, Tezos, Polkadot, Cosmos, Binance Smart Chain, etc.
If you don’t have currency, there are a lot of cryptocurrency exchanges out there where you can buy ETH or other currencies, but the easiest option is usually to use the Ethereum network and buy ETH directly with your Metamask wallet. In most cases, before you have a chance of earning any cryptocurrency selling an NFT of your work in OpenSea. You’ll need to buy some to cover the gas fees.
More detail in the platform website that you have chosen.

• Connect your NFT marketplace

If you already have a digital wallet and some cryptocurrency, next step you’ll need to connect your wallet to the NFT marketplace that you have chosen, such as OpenSea, Axie Marketplace, Larva Labs/CryptoPunks, NBA Top Shot Marketplace, Rarible, SuperRare, Foundation, Nifty Gateway, Mintable, and ThetaDrop. You’ll need to research each NFT marketplace to find the best platform for your NFT.
OpenSea is a good choice to start. because It’s a big marketplace that leader in NFT sales and easy to mint.
More detail in the platform website that you have chosen.

• Upload your NFT file

Your chosen NFT marketplace should have a step-by-step guide for uploading your digital file to their platform. That process will enable you to turn your digital file (a PNG, GIF, MP3, or another file type) into a marketable NFT.

• Setup detail in the sales process

Sell it at a fixed price: By setting a fixed price, you’ll allow the first person willing to meet that price to buy your NFT.
Set a timed auction: A timed auction will give those interested in your NFT a time limit to submit their final bid.
Start an unlimited auction: An unlimited auction doesn’t set a time limit. Instead, you have control to end the auction whenever you want.