Hi,
This is my other idea. i adding horseshoe as an "O" to make a key hole (the negative space on letter "O"). the horseshoe often used as symbol of luck. I also use the horseshoe because the pronunciation of "LOK" similar with "luck".
I also make the standalone graphic which incorporate luck, keyhole (lock) and "4".
Comments always welcome.
Regards,
kodoqijo
(This comment references Entry #59)