Internally painted glass bauble Christmas Decoration

Internally painted glass bauble Christmas Decoration
 
It must be such a difficult thing to do, to paint the inside of a glass bauble, particularly one of this shape. The painting shows a colourful angel playing a lyre. It was made in China. It has been quite difficult to photograph because of the reflection off the smooth glass surface. It is wonderful to the naked eye.
 
It is 11.5 cm high.