What is the ruling on earning money from YouTube if the content is free of prohibited things, and the content is my own, in terms of filming and editing, even if some ideas are common?

If the earning is inherently lawful, and does not infringe upon the right of another, then there is no harm in it, due to the Almighty's saying: "O you who have believed, do not consume one another's wealth unjustly but only [in lawful] business by mutual consent."