I found an art lesson book called "300 Lessons in Art" by Robert Henkes copyright 1981 (for middle and high school aged kids)
Lesson #1 is to draw natural object with texture in pencil and then with felt tip pen. Frogs are pencil. I didn't want to go over (as instructed) with felt tip pen so I did the peacock in pen instead. I am guessing I get an "F" for not following instructions, but the texture was fun to do while watching "Back to the future 3".