It's a neat image and I like the use of DOF to help isolate it from the background. Personally, I would have either shot this in a vertical format or cropped the sides away. Shooting in a vertical format would have allowed you to get even closer, filling the frame with the Indian Pipe.
WOW ! that is so very cool I really like your choice for keeping the backround greenery in the image, good choice, that has an effect for showing the delicateness of the mushroom keep up the good work!,