I printed a photo I took in my garden last year - changing the color to monochromatic purple. I trimmed the top and bottom to fit the 5 1/2" x 4 1/4" card base, adhered it to the card, and then simply stamped the With Sympathy from Waltzingmouse directly on the photo.
You never know if an ink is going to stamp well or 'squish' on a glossy photo! Luckily, this one turned out well!! I used Ranger Archival Jet Black.