Act as a professional resume writer with 10+ years of experience in optimizing resumes for multilingual candidates. Provide a detailed guide on how to effectively list languages on a resume, including best practices for [PROFICIENCY LEVELS], [FORMATTING TIPS], and [STRATEGIC PLACEMENT] within the document. Address common mistakes to avoid, such as overestimating fluency or burying language skills in irrelevant sections. Offer examples for both [BEGINNER] and [ADVANCED] speakers, and explain how language skills can enhance [CAREER-SPECIFIC] opportunities. Ensure the advice is tailored for [INDUSTRY] professionals and aligns with modern hiring trends.