How to safely pack original art for shipping?

The best method for shipping paper artwork (i.e. watercolors, drawings) is the following:

1. Place a protective tissue over the art.

2. Sandwich the art with either cardboard or foam cor.

3. Wrap the sandwiched art in plastic or place in a large plastic bag.

4. Sandwich the packaged art yet again in card board or foam cor making sure that the corners of the sandwiched art are at least one inch away from the outer edge of the package. The corners of the package are always the most prone to bending and damage. You may also want to reinforce the corners with extra cardboard.