So I'm quite pleased with the His Boy portrait poster but I was pretty sure hubby would not want them on the wall so I thought a desktop wallpaper...
So, anyway, a landscape wallpaper from His Boy. Easy peasy do a 16:9 cut on my lovely big file. The file is 8"x 12" at 300dpi so I have plenty of pixels to give me a great quality 1600 x 900 pixel at 72 dpi. Make a copy of the original PSD keeping the layers in tact and rename it to wallpaper or something. Using the Crop tool, set the ratio to 16:9 and move the image until you have a selection you're happy with. I leave the Delete Cropped Pixels unticked as a matter of course. This allows me to have as many goes at selecting the canvas that I want.
You can see, in the image below, the selection grid marking out the part of the image I am going to turn into my 1600 x 900 wallpaper. You can also see all of the parts of the underlying layers that I have previously cropped for the original portrait orientated image and that I have set my grid to use the rule of thirds. The grid helps me position the main elements of my image so as to draw the viewer eye to a particular part of the image. This adds interest and flow to the finished image, giving a more pleasant viewing experience.
Now I have my cut and my desktop wallpaper: