Check and log - Cast Shadows

The cast shadows fall from an object and will have different gradations. On that casted shadow you may have the reflection of the object's colour on it as well as the objects contours and highlights. The reflected shade and light work in the same manor as the cast shadow but with different contours. Also the reflection of the object will bounce back on to itself, especially on a shinny surface.

The first lesson in depicting realistic reflected shading and lighting is learned in the power of observation skills. Once you have learned how to see an items contours and its different shading in the shadows, you can then concentrate on showing this in your drawings. I found I had to keep looking at the angle of the contours as I was drawing as they do not always follow the same lines as the original object and will often refract, therefore they will not always be a mirror image. This can be shown in careful shading and highlights as you would if it were the solid object.