What does it mean by “add texture squares and value scales” when doing a still life drawing?

You are left with 8 pounds and 12 ounces or140 ounces (since there are 16 ounces per lb).divide 140 ounces by 2 ounces (serving size): you'll get 70 servings!

Because most artists loved the way that their men or women that they were to paint/sculpture just the way that they had when they sat and posed and they thought that it looked more i guess

Iwould say asking questions. even over the small things because then you can get an answer that should you to understand more.