Usually everyone enjoys seeing the variety of quilts that are brought for show and tell, and the more the merrier. At least that's the feeling I get from our guild. I can't imagine your newness in the group would create any problem at all. As for growing your business, if you mean that you will be offering your LA services to other quilters, surely most potential customers would love to see as many examples of your work as possible before turning a top over to you.