To make the image below your desktop wallpaper:
Right-click on the image below;
Left click on "Set as Desktop Background" (or "Set as Wallpaper")
Easy as that, and yes, you can change it easily. See all Jen's Christian wallpapers at "Desktop Wallpapers".

Song of Solomon 2:16: "My loved one is mine, and I am his: he takes his food among the flowers."