1-Start with 2 circles.Leave space in between.
2-Add 2 curved lines.Curve.Almost touches circle.
3-Add four more lines.Overlaps a bit of circle.Some at bottom.
4-Round edges as shown.Close the ends.Erase area indicated with dots.
5-Connect with curves.Curve inward.
6-Connect top & base.Erase dotted areas.
7-Add detail to lines.Erase dotted areas.
8-Add sand passing from top to bottom.Add lines to indicate transparency.
9-Shade.Erase some spots for “highlights”.Add dots for sand texture.