Same Effects like that on Samb's pics:
Ati Sapphire x300SE

You could use an animated more or less sphere shaped model for the hase.

The shadow should be less blurry and darker. Why didn't you apply a shadow to a moving model?
Static Shadows should be baken via ventilator's plugin, IMO.

The best results are probably achieved in collaboration like that one that you had when making the interior scene!

I'm impressed with your passionate never weaken efforts!
I hope you finally succeed! \:\)