Project Turnip Head from Howl's Moving Castle

Recently I had an idea for a piece. I wanted to paint my favorite character from Miyazaki's movies, Turnip Head. The only problem, there's no model for him. So I had to sculpt him myself. I've only sculpted two things before, with minimal success, but third time's a charm, right? Here is what I've done so far.

For the base, I'm going to use a piece of plasticard as a canvas for a background scene. I'm going to try and paint a little version of the castle in the distance, hope it goes well.