Today’s image is all about playing with light. I placed my newly acquired YungNuo YN-560 III flash (quite a bargain by the way) behind the glass ball. It was triggered by a built in optical slave when the main flash (my Nikon SB-600 with a Lightsphere) fired. Finally, a cross star filter provided the star effect, when things were lined up precisely.

Nikon D7100, 18-200mm lens
Post work done with Nik Efex and Lightroom