Some time ago, when I started the drawing challenge, I found a great blog post with illustrations of different surface textures. I fell in love immediately with the textures (anyhow, I am really fond of patterns I see everywhere around me ) and I decided to give it a try.
I used only pencil (2&4B) and rubber, and some of the depictions are not that accurate. But it was an interesting exercice and next time I plan to use other materials such as soft & hard pastel, charcoal, even watercolor, etc and integrate various techniques.
Thanks for the inspiration, Michaela !