Jules, I think you should let us be the judge as to you looking like and idiot biting your lip and looking suggestive.
On a more serious note, its the business. You do what's necessary to sell the product. Obviously you'll want to stay within what is your comfort zone of what's appropriate, but have some fun. The stuff that makes you smile, (even that little evil smile) is what's going to attract the attention. Let it fly girl!
Randy