I love the backlighting that gives her a silver lining!
I'd like to say I chose my spot because of the back-lighting, and waited for her to come into frame, so I could capture the shadow perfectly in the window frame, BUT I just had a few seconds before it was my turn to ride the track again so I put my trusty compact camera on 1/400, Auto ISO, and kept my finger pressed as she came round the track.
The lighting in the Velodrome, apart from that one spot, at that time of day, with the morning sun out, was absolutely dismal for photos.
I only spotted that it was a great place to light someone when I opened the image in Photoshop at home.
Such is life.
If you Do go to Calshot, in April, at 10am, when the sun is out on a beautiful morning, then you can see the spot you should tell your friends to ride though on the far left.. (Shoot in RAW of course).