I start with draw the body with a pencil and thinking about shape of it. I make the circle with a coin make a 3 circle.
I add river in to and try thinking about the shape and I try many design and look like this.
I add fine line pen, start color the resin river and wood grain.
I start sketching 3D in Procreate application on iPad .
Finally this is my design.
I decide to change my design after working on for a while.