Building an Opensea clone marketplace is a straightforward process. The first step is to purchase the Opensea clone script from a reliable and reputable software development company. Once you have purchased the script, you will need to customize it to your needs. This can be done using the integrated customization tools or by hiring a professional software developer. Once the script is customized, you will need to deploy it on a server. This can be done using a cloud hosting service or by setting up a dedicated server. After the script is deployed, you will need to configure the platform and set up the necessary features. This includes setting up the payment gateway, the wallet, the KYC/AML system, and other features. Finally, you will need to test the platform to make sure it is working properly. Once the platform is tested and ready to go, you can launch your opensea clone NFT marketplace.