I started with the design. I wanted the shield for most to be functional so I went with a rectangle shape, rounded up on the bottom part. It was nothing fancy. I actually thought that making it as thin as possible would be the best choice since I was going to enchant it anyway and make it incredibly tough, so making sure it was also light was a priority, because the amount of material wasn't actually directly benefiting the defensive capabilities.
Then I spent a while considering how to decorate it. I wanted something on the surface of the shield, which would represent my wife. Something that would describe her character without words.