okay, dan. dont take this the wrong way. I am not trying to hate on you. but take their advice, all of them know what they are talking about and excel at making sigs. if you cant take 'harsh' advice, then dont ask for there honest opinion.
I dont think your sig is bad, I think its just to 'busy' there is too much going on in it. way to much color and the text is kind of in your face. try to look at sigs like lana's barkers and amity(like everyone who posted above me)...they all stay close to the same color range and there text is not sticking out like a sore thumb,there text complements their sigs. Sorry if you took that the wrong way, I am only trying to help.