Try lining your bottom lashes with a dark brown or gray pencil first then take a fine liner brush, dip into a dark gray, black or dark brown eye shadow and smudge/blend the line.
Later, try lining the eyes with brown eye shadow instead of pencil.
Line your eyes using a dark brown eye liner; not black.
Next, take a fine brush, dip it into the dark brown eye shadow or even black shadow and blend the line creating a soft, smudgy effect.
Line your eyes using a dark brown eye liner - not black.