When pitching to venture capitalists or angel investors, founders must avoid making unrealistic financial projections without supporting data, downplaying potential market risks or competitors, or exhibiting defensiveness when faced with tough critical questioning. Additionally, entrepreneurs should never claim they have "no competition," display a lack of understanding regarding their unit economics and cash burn rate, or treat the fundraising interaction as a casual conversation rather than a rigorous business evaluation. Transparency, realism, and a deep command of financial metrics are essential to building long-term institutional trust.