I started out this project by taking a photograph of one of my watercolor paintings from years ago. Then I printed it 4-up on photo paper and cut down to use as card fronts. I trimmed enough to expose an 1/8-inch border of the base card.
I chose three different sentiments and stamped directly on the photo front.
Here is one in close up.
Because of the glossy finish these appear much lighter than their true colors.