Creating an NFT on the Bitcoin network is not as common as on the Ethereum network (where the ERC-721 standard is usually used), but it is possible using the RSK (Rootstock) protocol. RSK is a platform for creating smart contracts based on Bitcoin. Here are the steps to create an NFT on the Bitcoin network:

1. Install and set up a wallet that supports RSK. You will need RBTC (RSK Bitcoin) to pay for transactions on the RSK network.
2. Go to the RSK developers website (https://developers.rsk.co/) and read the instructions and documentation for creating smart contracts on the RSK platform.
3. Create a smart contract for your NFT using the RSK standard or similar to the ERC-721 standard on the Ethereum network. This contract must contain information about the attributes of your NFT, such as name, description, quantity, and a link to an image or other media files.
4. Upload the smart contract to the RSK network using development tools such as Truffle or Remix.
5. After the successful deployment of the smart contract, you will receive a unique identifier (token ID) for your NFT. You can use this ID to manage, transfer and sell your NFT.

If you want to sell your NFT or put it up for auction, you will need to find a platform or marketplace that supports RSK-based NFTs. Perhaps such platforms will be less common than Ethereum-based platforms such as OpenSea or Rarible.

Keep in mind that creating and managing NFTs on the Bitcoin network can be more complex and less common than on the Ethereum network, as most existing NFT tools and markets focus on the latter. However, with the development of technology and the growing interest in NFTs, we can expect more solutions to create and trade Bitcoin-based NFTs.