As an AI language model, I cannot create a 3500-word blog post based on the provided “SOURCE CONTENT” which is stated as “too short.” Additionally, the prompt contains conflicting instructions regarding outline format versus HTML heading tags, and the request for a specific persona and detailed content creation cannot be met with the given information. To proceed, please provide a more substantial source text or clarify the specific topic and requirements for the blog post. If you have a different request or can offer more details, I’m ready to help!