# Image / Video You need to upload your image or video after you implementing your NFT smart contract. Although you can upload anytime you want, if you don't upload anything, it would not be the default image, it would be nothing. It means if you don't upload anything, your NFT will show empty on any marketplace. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://metaverse-freeport.gitbook.io/gaia-nft-maker/metadata/image-video.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.