Creating a shoreline in Inskcape using a photograph as a model

My incomplete project:

The purpose of the demonstration:

To show how to use layers and sections of photographs as models for creating landscapes using Inkscape.

Tools used to create the landscape background:

• Inkscape 0.46

The intended audience and required skills:

Intermediate Inkscape users: familiarity with Potrace, with editing linear gradients, with duplicating shapes, practiced at using gradients for shading and lighting effects, drawing Bezier paths, clipping shapes, and exporting selections to PNG.

How to begin making a landscape background using Inkscape 0.46.

Helpful Resources:

The photograph from which this study is derived is by http://www.flickr.com/photos/chefranden/ and may be seen on Flickr.