You want to start by configuring an action that will do what you want with a single draft. In this case, it would be writing that out to a file in your Obsidian Vault. The Obsidian guide has examples to get you setup there, and configure your bookmark, etc.
Regarding specifics of your configuration, if you keep your title on the first line it’s a bit easier. Drafts has template tags for [[title]] to extract the first line (with Markdown heading stripped) and [[safe_title]] for the first line as a file-name safe version. You would only also need to configure the Path value to direct the file to a specific subfolder.