Sketch the main scene first
Block in the fog area with very light tones
Use soft, blended edges
Keep distant objects lighter and less detailed
Fade shapes as they recede
Layer translucent strokes gradually
Erase or lift highlights for misty patches
Add stronger contrast only in the foreground
Soften outlines with blending tools
Vary density to create depth
Leave some areas nearly blank
Use cool grays, blues, or muted tones
Smudge edges where fog overlaps objects
Add subtle gradients for atmospheric depth
Refine only a few focal areas