Yes, it is a book to document your eating habit in a month. The inside cover urges: “Think! Is it food? Who made it? Where did it come from? How did it taste? How fast did you eat it?” It's based on the photography project, You are What You Eat, which portrays the interiors of refrigerators across America. Visit here for more info. The illustrator here.
I don't know what is so hard about sketching, you just have to pull the line as you like it. But still it confuses me...
