Act as a seasoned startup founder with over 10 years of experience in raising capital from angel investors and venture capitalists. You are coaching a first-time entrepreneur on how to negotiate effectively with potential investors. Provide a step-by-step strategy covering: 1) How to [RESEARCH INVESTOR BACKGROUNDS] to tailor your pitch, 2) Key [TERMS TO FOCUS ON] during negotiation (e.g., valuation, equity, board seats), and 3) [COMMON PITFALLS] to avoid when discussing deal terms. Include real-world examples of successful negotiations and explain how to maintain leverage while being collaborative. Address how to handle pushback on [YOUR VALUATION] and when to walk away from a deal. Format the response as a actionable checklist with pro tips.