There was a dynamic challenge over at CA.org, and this one involved a cross-over with Spider-man and Batman, or any combination of people from their respective groups. This included Batwoman (although I think they were thinking Batgirl), Spider Woman (which I'm pretty sure has no relation to Spider-man), any version of Batgirl, Robin, and Spider Girl, as well as respective villains. I went with Spidey and Steph Brown Batgirl. I dunno, they seem like they'd get along pretty good.
Below are the thumbnails, roughs, and final image. I need to work on my inking, but I think I did okay. Of course, Steph's costume is almost entirely black. Doesn't help things.