The question I get asked the most often refers to proper art height. The center of your piece should hang about eye level, which is between 56-60". If you have multiple frames at multiple sizes, cluster them together and determine the middle. That spot should be hung at 56". Always leave 4-8" above a sofa and, like the table chandelier, keep the piece 2/3 the width of the furniture.
Sketchbook refrence work, a page looking into botanical illustration from over the years. I have used a cross section of media including watercolour and fineliner. Using different paper to work on has also been an essential part of these pages as I have experimented on working on sugar paper, newspaper and others. Dimensions: Double page spread in A3 sketchbook.