pouring beer, Dave the Diver character, bar setting, underwater theme, casual pose, holding a beer mug, frothy beer, bubbles, bartender outfit, ambient lighting, coral reef background, fish swimming, 3/4 view, detailed texture on beer mug, realistic, vibrant colors, soft shadows, dynamic composition, action of tilting the mug, beer pouring technique, steady hand, focused expression, detailed facial features, high-quality rendering.