Nautilus Bonnet

I've been pondering a series of little portraits of women from various time periods with nautical accessories....

Here is the initial sketch of a Regency-era lady with a nautilus shell for a bonnet. Conjured up while classes were cancelled and I was stuck indoors due to a crazy spring blizzard.

The finished product. India ink for line work, and mix of watercolor and marker for colors. However, after talking about it with a frien, I'm pondering changing the background to a warmer color.