DIY Beauty Dish (FAIL) with Light Painting (OK)

So I decided to try to make a beauty dish using a lamp covering and a bowl. It looks ok, but it doesn't quite work that well. It's not adjustable so I get this epic dark spot dead center of the illumination pattern.  On the bright side I messed around a bit with light painting and got the following. It kind of looks like some Paranormal Activity type stuff.