Python, I am posting this little image to show you the steps I do to get that effect on the bio.
It's not that hard. I begin with a light pencil and sketch out the shape, I made circles for this one but you can make whatever you want. It also depends on the shape of what you are drawing, if the shape is supposed to be round then the lines need to work with it as to not look flat. I then took a bit darker pencil and just darkened some areas and then filled a bit of the circles with the H2 pen. I then darkened it some more and smudged it with the stomp (do you call it that?). At this stage it is starting to look like rocks, so take a kneeded eraser and take away some lines and brighten the circles a bit, making it irregular. Darken areas that you feel could add more to the effect.
All these stages are probably not needed for everything, but try different ways and find the one you like.
I also have an update on the Viking predator:
Have not figured out what armour she should have on her right side, with the netting. Still working on the armour on the left side and her necklace.
Thank you very much, people, I'm feeling better then before. Still looking for a job though.
Have a nice weekend!