My little princesses- Personal work

These are my two wonderful models, I recently shot this picture of Suhana and Sanjana, I did something very unusual for this shot, I wanted to test a old vivtar flash of mine as a with the SB800.
Equipment used for this shot is Canon 5d MarkII body, 24mm-105mm lens. Nikon SB-800 and Vivitar flash. I set the SB800 on su4 as a remote flash and placed it behind suhana that is camera right. then i had the vivitar on my camera and setup on a low output and sb800 manually set up low zoomed in. I really don't have to do anything to pose them, they are both very natural.. Lighting in this shot makes all the diffrence. Looking forward for your inputs and comments.