To download to your phone.
1. Select the design you want.
2. Press and hold the Sleep/Wake button on the top or side of your device.
3. Immediately press and release the Home button.
4. To find your screenshot, go to the Photos app > Albums and tap Camera Roll.
To select your design as your iPhone wallpaper:
1. Tap the picture.
2. Tap the icon at the bottom left (the one that looks like an arrow trying to escape from a rectangle). …
3. Tap the Use As Wallpaper button. …
4. When you’re satisfied with what the wallpaper will look like, tap the Set Wallpaper button.