At first draw two straight lines which go under 45 and-45 degrees, from above hyphens plan cockleshells up.

Up cockleshells it is drawn by the undulate line, below we add its basis.

To be necessary for us the ruler. Strongly on a pencil do not press, slightly put lines, their quantity is not obligatory to coincide with mine, simply on a contour the distance between them has to be approximately identical.

Execute shading of dark sites.

Is slightly lighter tone we do shading from these dark sites from two parties, we paint over a bottom.