After teaching myself, I made blueberry bushes, and I want to put them in my map. But to others they show up as white boxes, and I don't know how to fix this because it is my first published map. I've added the .png/picture file but I don't know where to tell them to put it so they see the blueberries. Is it the exports? The my objects? If anyone knows, please tell me 'cause I'm lost.