add new skill baoyu-comic

skills/baoyu-cover-image/references/styles/nature.md

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+# nature
+
+Organic, calm, earthy
+
+## Color Palette
+
+- Primary: Forest green (#276749), sage (#9AE6B4), earth brown (#744210)
+- Background: Sand beige (#F5E6D3), sky blue (#E0F2FE)
+- Accents: Sunset orange, water blue
+
+## Visual Elements
+
+- Leaves, trees, mountains
+- Sun, clouds, organic flowing lines
+
+## Typography
+
+- Organic, flowing hand lettering with natural textures
+
+## Best For
+
+Sustainability, wellness, outdoor topics, slow living