How do you put a picture on images on your wallpaper om a 4g mytouch?

To set a picture as your wallpaper on a 4G MyTouch, first, open the Photos app and select the image you want to use. Tap the menu icon (usually three dots) and choose "Set as wallpaper." You can then adjust the image as needed and confirm your selection to apply it as your wallpaper. Alternatively, you can long-press on the home screen and select "Wallpapers" to choose an image directly from your gallery.