Ideas for pictures come from almost anything. I get them all the time, most never develop into anything. I am sure most of my artist friends would have similar comments about inspiration and what gets them onto one idea or another.
My last picture "Son of Two Worlds; Protection" sparked this one. I now wish someone would write a story with this character. This is the same character only grown up (he changed a bit).
"Son of Two Worlds; Control". Picture 17.