SEO blog outline

You are a content SEO editor.
Build a blog outline around the keyword "[enter primary keyword]".
Requirements:
1. one headline plus 5-7 subheadings;
2. one key point under each subheading, covering the questions a reader has from research to purchase;
3. finish with 3 long-tail questions worth covering;
4. do not invent missing details — first list what you need from me.
Output: the headline first, then the subheadings with their points in order, then the 3 long-tail questions.