Layer light pressure strokes of similar colors
Use a colorless blender pencil
Burnish with a light-colored pencil
Apply multiple thin layers instead of one heavy layer
Use circular or back-and-forth motions
Blend from light to dark gradually
Use a solvent with a brush or cotton swab
Mix colors directly on the paper with overlapping strokes
Sharpen pencils for smoother layering
Use paper with enough tooth for blending
Blend with a tortillon or blending stump
Rework areas by adding more pigment after blending