Add or remove them to live wallpaper list.
Set live wallpaper with following options
Bubble or rectangle images will be flown over your home screen. You can select maximum number of images flying at the same time. Images will be selected from lwp list which you can configure any time. You can also change the speed of flying images
A full screen images in your home screen which will be changed based on your configuration.
Free images is used in the app from www.pexels.com. Licensed under the Creative Commons Zero (CC0) license