I've seen the "50 questions to ask about your character" lists. Those are very useful from the beginning and I still use them after 10 years of role play.
I think I would like to move to more advanced techniques. Things I can do as a player to surprise other players. How to handle complicated situations like "I am playing a character of God who is extremely powerful, and I don't know how to attract them since they already have everything."
What would be a good resource for this?