Here's a still life done for painting class, with the main goal being to understand light and color, and how every object will have a range of colors in it no matter what it's local color is, and getting those subtle variations will add to the illusion of light.
This was really fun to do, and quite refreshing to get a pretty finished image done after all the technical exercises and faster paintings we've been doing in other classes, and the knowledge you can gain from stuff like this is great. The understanding of light will apply to every representational painting you do, and painting different surfaces from observation adds to your ever-growing visual library. Things like this can be the key to doing realistic work from imagination, be it shells and flowers, dragons and wizards, or spaceships and aliens.
Hope ya like it, and if you want you can see some closeups here and some of the process on my blog here.
Those reflections are phenomenal, and everything is so spot on! And I agree with your statements about painting/drawing still life such as this can be extremely helpful, even when drawing fantasy/imaginative subjects.