Building a standout graphic design portfolio involves showcasing a diverse range of high-quality work that demonstrates your skills and creativity. Focus on including projects that highlight your versatility, such as branding, web design, and print materials. Make sure to present your work in a clean, organized manner with detailed case studies explaining your design process and problem-solving abilities. Tailor your portfolio to reflect the type of work you want to attract, and keep it updated with your latest projects. Additionally, consider incorporating client testimonials and a personal touch to differentiate yourself in the competitive graphic design industry.