Yes, but what does it mean? Is it a representation of you? Your interests, perhaps? Pasttimes? Characters? Country of origin? Outlook on life? Being a sigmaker yourself, you have the unique opportunity to have whatever sig you can envision.
Typically, your sigs just say "i can maek shinehs!" Shininess is shiny and all, but is it truly what you'd like to represent yourself as? Or is this just because you make and sell shiny sigs for others, and your forum persona exists solely for marketing?