Another great one of Oracle! The thing which stands out for me right off the bat (heh, pun intended) are the shadows in this piece. Obviously, the shadow of Batgirl is a brilliant touch but I also think the way in which you've incorporated shadows into this drawing is done incredibly well. It sets a great tone. I also love how you've drawn Babs. The hair looks touchable and I love the side-bangs with the ponytail. Her face looks gorgeous and I'm loving the classy outfit. Also, I'm digging those yellow wheels! It reminds me of her Batgirl cape.