I am sorry this took me so long! I did a bunch of graphic design work for a client's social media this week, and it reminded me of this. I've made composites of your photos to go on your computer desktop, Facebook, and Twitter. I did some very light blurring at the image seams to make it less jarring to see the photos together, and I did some moderate color correction to emphasize that it's two different images. I've also included the raw composite so that you can do your own editing if you'd like. The important thing is that you get those dimensions to the same size I set them at. (Social media networks are always changing this, but it'll work at least for now!)