Phase Spider

I am working on the conversion of the Phase Spider... originally the Phase Spider looked like a Spider, then at some point it picked up traits that are described as human head, human like head and so on... <div><br /></div><div>So my question is on the spidy of doom what to do about the head? </div><div><br /></div><div>Do I do humanish head on spider, spider head on spider or only human/spider head mix?</div><div><br /></div><div><br /></div><div><br /></div>