Zbrush Log

This is a log I attempted to model in Zbrush. I started out with a cylinder, then subdivided. I then tried to begin to build up layers of "bark" on the outside of the log with the clay brush. For the concentric rings of the log, I used the circular alpha to make the shapes on the top of the log. I think that the rings and the basic shape are ok, however the bark looks more like melted wax on a candle than actual tree bark. I didn't know how to improve it so this is the final design.

I did a small addition to the log by adding some colour for it to apply to the brief work.