Wow, I absolutely LOVE this Nightwing design. Your art is brilliant. I was going to make a Nightwing costume based off of the original design worn by Dick Grayson, but I am in love with your work here. Would you mind if I decided to make your design? I would credit you, of course.
I love the fact your Robin design is close to the original while being modern. And the femal Nightwing (Steph ?) is powerful Batman may be weaker in terms of design but its pictural presence gives depth to the composition.