Line: The book shelf in the room shows the use of line because the book shelf shelves are built against the wall forming a miniature tree. Our eyes are drawn to look at the book shelf tree from bottom to top and outward to the tree/bookshelf branches.
"These two stripes work together beautifully! The pillow with the white background and thin blue stripes plays off the bolder pattern so perfectly." If i hadn't seen this I would never have considered two different stripes on one piece of furniture.