13. after you have made it into a symbol double click into the square this will take you inside the symbol and a new time line. this is just like the time line you were in but now you are inside of a symbol. make a new layer just like you did it before by clickin on the insert layer button. all the art work is in the bottom layer as of right now you can tell because of the little black dot under and on the top layer there is a white dot. the white dot means there is no art work on this layer.