Agrippina-colour

This is my portrayal of Agrippina when she was arrested and brought before emperor Tiberius. In my original sketch she is fully clothed, but when I started colouring it I got a bit carried away with fleshing her out! I'm no good at drawing drapery- still need to figure out how to make that torn dress look right. Anyway, Tiberius could have had her stripped and beaten in his presence, enjoying the chance to humiliate her, as well as to get a look at her in the buff! (the lecherous old goat)

WIP, so please comment on how I could improve it