I will add to the chorus of people telling you that you are not a coward. Maybe you will get to a mental spot where that is something you are comfortable doing, maybe not. But just being a thoughtful person who thinks and worries about how they do or do not represent the community is a huge plus for us all in my opinion. I am working on being more out there myself. I think waiting until you are comfortable (if ever) to put yourself out there will ensure you are the best possible ambassador and in my humble opinion that is much better than rushing out there and being uncomfortable.