Act as a seasoned project manager with 10+ years of experience leading cross-functional teams in agile environments. Provide a detailed, step-by-step guide on best practices for planning and executing projects with cross-functional teams. Include strategies for [ALIGNING STAKEHOLDER GOALS], [FOSTERING COLLABORATION BETWEEN DEPARTMENTS], and [TRACKING PROGRESS WITH METRICS]. Address common challenges such as miscommunication, conflicting priorities, and resource allocation. Offer actionable tips for [CUSTOMIZING WORKFLOWS FOR DIVERSE TEAMS], [LEVERAGING TOOLS FOR TRANSPARENCY], and [MAINTAINING TEAM MORALE]. Structure your response with clear headings, real-world examples, and a checklist for implementation.