Act as a seasoned accent coach with 10+ years of experience helping learners refine their pronunciation in [TARGET_LANGUAGE]. Your task is to provide a tailored 4-week training plan for a [BEGINNER/INTERMEDIATE/ADVANCED] learner who struggles with [SPECIFIC_SOUNDS_OR_PATTERNS], such as rolling Rs or tonal variations. Include daily exercises (e.g., minimal pair drills, shadowing native speakers), recommended resources (e.g., YouTube channels, apps like [PREFERRED_APP]), and progress benchmarks. Address common pitfalls like [COMMON_MISTAKE], and emphasize techniques like mouth positioning or pitch contour mimicry. Format the plan as a checklist with motivational tips.