copy the whole folder (Android) to /opt/qtlockscreen/
copy (QtLockscreen.ini) to /home/user/.config/sakya/
copy (Clockopia.ttf) and (DroidSans.ttf) to /usr/share/fonts/
then killall qtlockscreen
you can change the background as you want ; because all of the components are transparent
copy the whole folder (Android) to /opt/qtlockscreen/
copy (QtLockscreen.ini) to /home/user/.config/sakya/
copy (Clockopia.ttf) and (DroidSans.ttf) to /usr/share/fonts/
then killall qtlockscreen
you can change the background as you want ; because all of the components are transparent