After you create an NFT, the next step is to sell it to an audience. OpenSea makes this process considerably easy, allowing you to alter the pricing, set royalties, and even create auctions.
To sell your NFT, navigate to your profile on the top-right.
From there, select the NFT that you intend to sell. You will then be taken to the listing page.
On the listing page, you can set the price of your NFT, as well as the kind of sale you want. The two options include a Timed Auction and a Fixed Price sale.