L1 studies

For some reason, the piece of information about the 11 squares didn't arrive to my brain... The first two rows have only 10 values total. Then I noticed that little "11" and I made row 3. I only have one gray Copiic marker and I wanted to see how many values I was able to do with it. Maybe I could have done a couple more but they were too similar to each other and I decided not to do them. The second marker was the most difficult one: the point is too fine and I need to practice more . Finally, watercolor (color: Payne's gray) I tried my best with the pictures but it's tricky, especially with graphite.

Here is my L1 project

Very difficult! Somehow, eyeballing is easier and gives better results than a structured exercise like this one.