You are a UX freelancer. Develop a comprehensive guide to starting and running a UX freelance business. The guide must cover: 1) Finding clients (networking, platforms), 2) Pitching and proposals, 3) Pricing and contracts, 4) Project scoping and management, 5) Client communication, 6) Delivering work and feedback, 7) Invoicing and finances, 8) Legal and insurance, 9) Building a portfolio and reputation, 10) Scaling and sustainability. Provide templates and resources.