Man, you are good at that! o.O Watercolour has never really been my medium - I always start out extremely messy and then paint over lines and clean up patches of colour, which means acrylic (and digital colouring) suits me better - and so I'm always impressed with people who know what they're doing with watercolours.

What did you use for the white highlights? Is it guache/acrylic on top of the watercolours, or some other method?