You could do that if you created the image into 2 sections but I am not sure if you can have 2 pictures as a signature. Like one half saying poetry and the other half saying comment. I would check the rules for signatures.
I know of just one way. Greatly optimize the code you're using, and have 2 separate images. Basically, cut it in half, and link each half separately. You have a limit on the code in your sig, mine approaches it quite nearly.
Had to shrink a bit for the extra space, but you can just place link tags around then to link to your comments. Hopefully it fits, if not, you'll have to use Tinyurl.