Here are several steps to follow:
Select a marketplace and create an NFT
The first step is selecting the right NFT marketplace. There are dozens of marketplaces, and many of them specialize in a certain type of audience. Here are some websites to choose from:
OpenSea Magic Eden Rarible LarvaLabs  LooksRare Stargaze
Each platform’s process will differ slightly, but most allow you to create tokens in a matter of minutes. Also, note that if you are interested in passively monetizing your work over time via royalties (a percentage of each subsequent sale of your NFT on the secondary market that will be paid for you).
List your NFT for sale Promote your token
Once you complete the listing, your NFT is accessible on the marketplace. Now you need to promote to potential investors to get new clients and boost your sales.