One page is ideal. Two maximum. Clarity, not comprehensiveness.
Where the client is now. Current traffic, rankings, content volume. Frame the gap.
What is possible. Reference competitor performance or your own case studies.
What you deliver each month: keyword research, X posts published, optimization, reporting.
"Investment: $3,000/month. 6-month minimum commitment."
"If this looks right, I will send the agreement and we can start publishing next week."
Pro tip: Send the proposal within 1 hour of the pitch call. Momentum matters.