Create an account on Envision Platform .
Login and expand Creators Portal on the right hand side panel then select 'Stock Library'.
Click upload button located in top left of stock library and select the content you wish to upload.
Select uploaded content by and using the panel on the right begin applying titles, tags, categories and finally licence types and prices before clicking save.
Once content has all required information saved it automatically move to 'Ready to Mint' stage.
Log in to web3 wallet and connect to platform by clicking wallet icon located in the top right corner before navigating to the account profile page and whitelist wallet.
Select the content you wish to sell that's located in the 'Ready to Mint' stage and click the 'Mint' button found in the top of the right hand panel then sign transaction in web3 wallet.
Navigate to the 'Confirm for Sale' tab and and approve NFT for sale, this will only need to be done once.
Selected the newly minted content which you wish to list for sale then click the 'Mark for Sale' button located in the top of the right panel then sign transaction in web3 wallet.