Act as a senior UX/UI designer with 10+ years of experience crafting compelling LinkedIn portfolios. Create a step-by-step guide for designers to showcase their work effectively on LinkedIn, including: 1) How to structure [PORTFOLIO PROJECTS] with clear problem-solution narratives, 2) Best practices for writing [ENGAGING CAPTIONS] that highlight design thinking, and 3) Tips for optimizing [VISUAL PRESENTATION] with mockups and case studies. Include specific examples of successful designer profiles, dos and don'ts for project descriptions, and strategies to demonstrate [YOUR UNIQUE DESIGN APPROACH] through your portfolio. Address how to balance brevity with depth, incorporate metrics when possible, and make your work discoverable to recruiters and clients.