Comment on Wondergirl's post
Thanks. Except do you know of any good places to sing for? I can't do it at my synagauge or school. Any other places?
I have no idea where you live and what's available in your town. Ask an adult -- a parent, your rabbi, a teacher. Are you going to be the only one singing, or are you going to organize a musical event (more people, more money)? Would people come to hear only you sing and pay money for the privilege?
I don't know how involved this can be/has to be, how much time you have to plan it, how much money you want to raise. If you want to sing four songs in front of your own family and a few relatives in order to raise $25 for charity, you can do that in your living room. If you plan a musical event, you may have to rent a room in a restaurant or find a public building that will allow you to use a big room.