This “Before & After” is a simple cross-processed image with a little bit of Photoshop layer styles added to give it a white border. Above is the finished version … here’s the straight-out-of-camera RAW image:
I did some white-balance and tonal adjustments in Adobe Lightroom, and also added a cross-processed effect using the “Split Toning” panel. The adjustments are visible in the image below:
I then brought the photo into Photoshop and added a Black & White adjustment layer with the blend-mode set to “overlay” (I clipped it to the main image so it wouldn’t affect the layer style). The layer style is a stroke using a pattern (one of the white paper patterns), then I added a simple drop shadow to give it some depth.