Needlepoint Stitch Guide for Seashore Shell

Seashore Shell Stitch Guide:
Paler Blue on Shell—Byzantine Stitch #2:

Darker Blue on Shell—Tent stitch
Background Blue Columns—Tracks Simple Darning Pattern:

Background White Columns—Vertical Double Brick stitch:

You can purchase the Seashore Shell needlepoint kit here...
And the series of three blue and white seashore designs here.