I've gathered together some illustrations that others have made of Boudicca. Gathering these images has been useful because I can see the similarities and differences on how people have previously tried to portray this historical figure.  All of these images show Boudicca with long hair and wearing a colourful tunic and cloak.  Many of the images I've found show Boudicca in a chariot alongside her two daughters. 

No one knows for certain what Boudicca looked like so I  can use these images as inspiration when creating my character designs.