Photoshop Elements 14
https://www.annaaspnesdesigns.com/product/artsydoubles/
I had done both pages of this spread separately, at different times, and the challenge was to join them gracefully at the centerline for inclusion in my daughter's wedding album. The techniques I learned in Artsy Doubles (just released as a self-paced class with a big mega-bundle of supplies!), sure came in handy, giving me lots of ideas on how to move color, shape, and pattern across the pages to create a sense of flow and continuity. This spread turns out to be one of my favorites in my daughter's wedding album.