First, install CWallpaper, either from source or using the Debian package.
Now we need to make the config folder.
me@home:~$ mkdir -p ~/.config/cwallpaper
Next you need to copy the wallpaper list building script to your home folder, and make it executable.
me@home:~$ cp /usr/share/cwallpaper/ /home/xentalion/.config/cwallpaper/
me@home:~$ chmod u+x ~/.config/cwallpaper/
And build your wallpaper list. (Replace ~/Images/Wallpapers with the path to your wallpapers folder)
me@home:~$ ~/.config/cwallpaper/ ~/Images/Wallpapers/
Now you need to copy a config file to your ~/.config/cwallpaper folder.