The first one , she draw a butterfly and its wings' pattern are two kids, it's very creative. And it has 2 shapes in it.
The second one, I like the colorful paints on the man's head and body, and paints set off hands more clear. And the hands are big, shows more close to us.
I use charcoal pencil and charcoal draw it, also use paper towel and water on it. Water can makes dark place more dark, and paper towel can makes dark connect to light place.
I use charcoal pencil and stick draw it, and use paper towel makes drawing looks more smooth, and the I use stick draw on the side of the object close to me, makes drawing more 3D.