Re: Elements 11: I want to add my own graphics to the list of default graphics, is this possible? (Make an .CSH from a .png or .jpg and place it in the system)

I am not aware of a way to make your own graphic.csh in PSE.

However, it is not difficult to make a brush incorporating the information. A brush is very versatile, as you can adjust the size, color, and place the watermark where you wish.

There are many tutorials. Here is one:

Creating and Using Custom Brushes in Photoshop Elements