maybe u can make it as b/w? and increase the shadow part?......just a sudden idea...if the center of the spiral is a human and a bit of light is shine on him/her, will it make the whole pic look nicer?
it's a pity the LHS of the spiral is cut off...
yeah like wat night8mare said, use a wider lens (if u have) and lean fwd more,
i would prefer a squarer crop though...