Okay, so here's some stuff.
I was going through some old life drawings and found a kind of fun gesture drawing. It's dramatic, it has some flair, and I said to myself "hey, that looks like a pose Zatanna would take." So, I worked it up as a rough sketch, which turned out okay.
Once I had some decent line art, I put it on the lightbox and traced it onto some watercolour paper to do a rendering in ink wash.
Again, turned out okay. The wash did a couple of things I didn't expect, but that's what Photoshop is for, right?