Observe real cloud shapes and lighting before drawing
Lightly sketch the overall cloud masses with soft, irregular outlines
Keep edges varied; mix soft edges with a few sharper ones
Use large, simple forms first, then add smaller cloud shapes
Shade the underside and inner areas to show volume
Leave bright areas unshaded for highlights
Blend gently to create soft transitions
Darken areas where clouds overlap or are denser
Use curved strokes to follow the cloud form
Add subtle tonal variation instead of flat shading
Include atmospheric perspective by making distant clouds lighter and softer
Erase highlights to refine bright edges and sunlit areas
Avoid outlining clouds with hard lines
Build layers gradually for a more realistic look
Use reference photos to match light direction and cloud type