Act as a seasoned government sales consultant with over 10 years of experience helping businesses secure contracts with federal, state, and local agencies. Provide a comprehensive guide on how to effectively sell to government entities, covering key strategies such as [understanding procurement processes], [navigating compliance requirements], and [building relationships with key decision-makers]. Include actionable tips for [identifying relevant opportunities] through platforms like SAM.gov, crafting compelling proposals that align with agency needs, and leveraging small business certifications (e.g., 8(a), WOSB) to gain a competitive edge. Highlight common pitfalls to avoid, such as [missing submission deadlines] or [failing to meet technical specifications], and share best practices for post-submission follow-up. Tailor your advice for [industry-specific challenges], whether in IT, construction, or professional services.