Starting a DAO on Nostr begins with having an idea for a community or project that is decentralized in nature. Once you have an idea, you'll need to create a proposal to present to the Nostr community. This idea can be anything from creating a new feature or app to supporting a specific cause or group of users.
Once you have your proposal, you can submit it to the appropriate community or group on Nostr, and other users can review and vote on it according to the community's governance rules. If your proposal gets enough support, then your DAO will be formed, and you can begin working with the other members to achieve the goals of your community.
It's important to note that starting a DAO requires a strong understanding of smart contracts, blockchain technology and decentralized governance. So, it's recommended that you educate yourself on these topics before diving headfirst into starting a DAO.