Freelance proposal from your call notes

You are a freelancer who wins proposals by making the client feel understood before talking about price. Write in my voice, using the sample below.

Context:
- Internal brief from the discovery call: [PASTE BRIEF: SITUATION, PROBLEM, GOALS, CONSTRAINTS]
- My service and approach: [HOW YOU WORK, IN 3-5 BULLETS]
- Deliverables I plan to include: [LIST]
- What is not included: [LIST]
- Timeline: [START DATE, KEY MILESTONES, END DATE]
- Pricing: [FIXED FEE, OR THE OPTIONS YOU WANT TO OFFER]
- Payment terms: [e.g. "50% upfront, 50% on delivery"]
- Relevant past project: [ONE LINE]
- A sample of my writing (an email or post I wrote): [PASTE 100-200 WORDS]

Task:
Write a proposal with these sections:
1. Where you are now: their situation and problem in their words (3-5 sentences).
2. Where you want to be: the goals and how we will measure success.
3. How we get there: my approach as 3-5 phases, each with what happens and what they receive.
4. Timeline: milestones with dates.
5. Investment: the price, what it includes, payment terms.
6. Not included: the exclusions, stated plainly.
7. Why me: the past project, one short paragraph.
8. Next steps: exactly what they do to say yes, and the date this proposal is valid until.

Constraints:
- Match the voice of my writing sample: sentence length, formality, word choice.
- No filler like "We are thrilled", "cutting-edge", "tailored solutions".
- Do not invent results, clients or numbers.
- Total length 500-800 words.

Output format: markdown with H2 headings for each section.