Sketch the eye shape lightly
Mark the iris, pupil, eyelids, and tear duct
Block in the base skin tone around the eye
Paint the whites of the eyes with a soft off-white
Add the iris color
Paint the pupil dark
Leave a small highlight in the eye
Shade the upper part of the iris
Add shadows under the eyelids
Blend the edges of the eye softly
Define the eyelid crease
Paint the eyelashes with thin, varied strokes
Add subtle redness or warmth near the inner corners
Refine the reflections and highlights
Adjust contrast and detail as needed