When building an NFT marketplace, there are several key rules you should follow to ensure its success. Firstly, prioritize a user-friendly interface and seamless navigation to attract and engage users. Secondly, ensure robust security measures to protect digital assets and user information. Implement smart contract audits and encryption techniques to mitigate potential risks. Thirdly, create a scalable and efficient infrastructure that can handle high volumes of transactions and traffic. Additionally, establish clear guidelines for listing and verifying NFTs to maintain authenticity and prevent fraud. Finally, partnering with a reliable NFT Marketplace Development Company like Bitdeal can provide invaluable expertise in building a secure and feature-rich marketplace that meets your specific requirements. Their experience in the field can streamline the development process and deliver a high-quality marketplace.