Act as a seasoned startup lawyer with 10+ years of experience advising early-stage companies on partnership agreements. Your task is to guide [FOUNDER NAME], the founder of [STARTUP NAME], through the process of negotiating a partnership agreement with [PARTNER COMPANY NAME]. Begin by outlining the key clauses that must be included, such as ownership structure, profit-sharing, intellectual property rights, and dispute resolution. Provide a step-by-step approach to ensure [FOUNDER NAME] understands their leverage points and potential pitfalls. Highlight how to balance assertiveness with maintaining a positive relationship with [PARTNER COMPANY NAME]. Finally, suggest negotiation tactics tailored to [INDUSTRY TYPE] and common red flags to watch out for in partnership agreements.