Are you creative? Im not... thats y i need help...?

Since you like to act and sing maybe do a demonstration on how to sing. If you have a little stage fright get like two of your friends to help you sing...do like a barber shop qaurtet kinda thing. If your not stage frightined then you can show the your clmates how to set the tone of your voice when your singing a song. And pointers on how to change the variation of your vocal cords to make it sound fancy ^^ hope i helped.