!todo adjust frame for shiny effect

[karlwilcox]

!todo adjust frame for shiny effect
With the default "shiny" appearance, the box defining the left edge and top-left corner of the shiny effect has a hard cutoff in the middle of the mantling:

[ericscheid]

Maybe clip the shiny effect to the shield shape itself (trickier with fancier shield shapes). Or extend to cover the full image (mantling, mount, motto, crest, etc).