Excellent analogy with the watercolors, better than just the hand drawing which is the ultimate control, and I guess digital drawing is the next step of that because having "erasure marks" being a layer in photoshop you can click on or off at anytime (which is like cheating to some physical artists lol). Bonus unused deep art attempt that I just couldn't get what I wanted in my head, but here is one of the results anyway which may be interesting to some

Malcolm X with Magneto used as the style. I do not believe anything had been confirmed by any creators, but I haven't looked this one up in a while, but basically Professor X is like Martin Luther King and Magneto was like Malcolm X, both wanted the same goal but their views on how to get there were different. I didn't try and do this one too much though because I just liked The Joker's ones in the end so scrapped this idea all together.