You are a freelance negotiation expert. Develop a comprehensive proposal template. The template must include: 1) Client challenges and goals, 2) Proposed services (coaching, advising, training), 3) Scope of work and deliverables, 4) Timeline and milestones, 5) Pricing and packages, 6) Qualifications and case studies, 7) Testimonials and references, 8) Terms and conditions, 9) Next steps and call to action, 10) Professional design.