On your iPhone: Tap + hold background, Save background to "Photos", Open the "Photos" app, Click the background, Tap lefthand corner icon, Select "Use as Wallpaper"
On your computer: Right click, Save background to your computer, Email or text the background to your phone, Follow steps above!
Not on iPhone? Simply save the photo it should adjust nicely!
Hope you enjoy these wallpapers each time you open your phone! Sending lots of spring vibes your way.