To model a sequoia, it is essential to capture the red quality of the bark, and the deep, sometimes irregular grooves. I strive to improve on this effort with each tree I make.
Perhaps I have I made some progress toward prototypical color. The coloring process for these is complex, using sequential layers of clothing dye intermixed with layers of fresh steel wool/vinegar solution.
The trees similar to these were used in a
X-box internet commercial. The Sequoia bark was not needed, but I used the techniques I had learned with the carving and engraving of the bark detail, which was another opportunity for improvement. (you must click on the image to get the full size).