A portfolio of 4-8 strong, varied projects beats twenty mediocre ones, because clients and hiring managers judge your weakest piece as your skill ceiling -- quality and range (a logo, a social campaign, a poster, a mock app screen) matter more than quantity. Each portfolio piece should include a short case study: the client's problem, your design decisions, and the final result, because explaining your thinking demonstrates problem-solving ability, not just visual taste, which is what separates a hireable designer from someone who can only copy trends. Free platforms like Behance, a personal Canva or Notion page, or even a simple Instagram grid can serve as a credible online portfolio with zero cost, and including even unpaid or personal 'spec' projects (redesigning a real local business's branding, for example) is a legitimate way to fill gaps before landing paid clients. For designers targeting international remote clients, having an English-language portfolio with clear project descriptions and a simple way to contact you (email or WhatsApp Business) directly affects how many inquiries convert into paid work.