Dark Mark Over the Astronomy Tower

Wanting to find something different, I choose one of the final scenes from the sixth book 'Half-Blood Prince':

To create the scene I took the look of the towers from the film, and my own version of the dark mark; with it's green glow and serpentine tongue. The mark uses inverted plates supported on transparent beams from the tower roof; the broomsticks are similarly supported.

I digitally enhanced the final image by adding varying degrees of blur to the layers to create depth with a mist effect between them and removed the transparent blocks. I include the un-enhanced shot for comparison along with alternative views and shots to show the construction.

Hope you like it, it's been fun to finally create a Harry Potter scene!