There are a few things to point out in this picture, first thing, depth of field, this picture makes the mushroom the main focus, whilst the background is blurred. Also, we can see the texture inside of the mushroom. I like this picture the most it is zoomed in, and the texture is smooth.
The texture in this image is really interesting as the icicles against the metal are really intriguing. The background being blurred creates a more up close and personal feel to the photo as it looks like you're invading its space by getting so close to the chain.