The hound and the bull

I'v been trying to come up with an idea for the upcoming Islander Art exhibit. So far the only thing I like is a picture of Cuchullain having killed his friend Ferdia, those of you up on your Irish mythology will know the story of course : )
After a whole bunch of sketches I'm getting happier with this image

This is one I did real quick in photoshop just to play with the colours. The shape of the overall image is based on a celts shield and I prefer the idea of showing just the hand to leave the viewer to figure it out rather than having the body float away, which is how I had it originally.