Tortoise style

Like with the salamander, I have been experimenting with different styles for the tortoise character. I think I want to make quite realistic so haven't tried to add a cartoony effect them.

Here is an idea incorportating different widths of outline, incorporated with small dots to decorate it:


This is in the style of Stefan G. Bucher:


This was just an experiment of how the different textures on the tortoises could be represented in terms of pen and ink: