Cindy! Easy Peasy! First, some background. I use Photoshop Elements 15 and a number of other editing programs and skipped PS except for my last paid copy of Photoshop 7 (I hate layers!). I even use my favorite, Micrografx's Picture Publisher 10 from 2001 most of the time! As I have a number of laptops and desktops, they will have different versions of editing programs on them and I use them for different editing chores.

Your images are lovely and as downloaded the bridge file opens to 20" wide by 9.343" high. Open the "Image" tab on the Menu bar and drop down to "Resize." Click on "Resize Image" and a window will open with the dimensions of the file. In the "Dimension Size" box, change 20 to 10 for a 10" wide image and the height will automatically change to 4.672." All other items in this window will be at default. Click "OK" and your new image will now be at 10" wide by 4.672" high. You can save this new file size and/or go on to the next step.

Again, click on the "Image" tab and down to "Resize" but this time to "Canvas Size." In the "New Size" box, change 4.672" to 8" and then click "OK." The resultant image will now appear "letterboxed" with white borders top and bottom. You can use the "Canvas Extension Color" box at the bottom of the window to choose white, black, gray or any other color. Back in the days of my custom print lab business, this type of print was called "8x10" borderless 2 sides, utilizing the full paper at the sides (landscape orientation).

You could use the same procedure for any print or any other size by varying the "Canvas" measurements. Practice makes perfect. This technique is called "Self-Matting" and prints thus made
look great in a portfolio binder or frame without an expensive cut mat.

Have a great Memorial Day weekend. Be well. Ed