Pros : Great detail, excellent size.
Cons : Need to experiment to get the right firing schedule for optimal thinness. I don't measure but mine run about 2.3 grams @ 1400 top temp.
Other Thoughts : I prefer thin butterflies with a lot of powdered frit details. Take care with metal inclusions. The wing attachment to the body is very thin. A better design is a strip of clear glass w/ little bit of fiber paper to make the hole for the hanger.