I want to share with you how to make these Mushroom Sculptures. With all the cool rainy weather its been perfect weather for mushrooms, sprouting up all over the place. About 4 years ago I read about these mushrooms in Family Fun Magazine. They were supposed to be for the kids to play with but I decided to make them into garden decorations. How to make a Mushroom Decoration for the Garden Please note: You are currently browsing img outdoor accessories garden decor yellow mushrooms that is 800x800px in size. This image is listed in mushroom garden decor category. How to make a Mushroom Decoration for the Garden, 800x800 in 177.51 KB.