Photovisi is a is a cool application that allows you to make your own collage photo wallpapers out of your photos and images. Just select a template and upload your favourite photos or the images of your screenshots stored in your English folders on your computer. For example, I created one with the pictures of my avatars.
Once you are satisfied, save your collage and download the wallpaper in your desired screen format.
Try it out! The steps are simple and easy.