>>1460404It depends on how you have them set up. There's a couple of ways, depending your Graphics card. One method is the GPU fools the OS into thinking only one monitor is attached, but has a resolution equal to both screens (only works if they are both the same resolution). All the wallpapers in this thread will work right off the bat using that method.
The other way (yours, and mine too) allows for differing resolutions, by simply treating one screen as a secondary (so no taskbar, etc). To get wallpapers like these to work, you have to do a bit of trickery. Essentially, you get an image editor, separate the two halves of the wallpaper, make one your wallpaper, then use something like active desktop to have the other half display on the other monitor while still allowing standard desktop behavior. Essentially, both screens have the same wallpaper, just that the secondary one has the second image over the wallpaper, but under the icons.