Firstly good news is that with current picture you dont seem to have oral cancer. Although oral screening is mandatory .Single picture cannot replace complete examination.
Secondly if you felt you might have do you want to have lame answers from google for something so serious concerning your life?
Next Steps
PLEASE visit or do tele consulation with an oral diagnostician/oral medicine specialist in who are well trained to note the earliest signs of oral cancer and premalignancy.
Health Tips
Delay in correct diagnosis only makes conditions worse. You may contact specialist in your area or contact me but its essential to get proper diagnosis done.