Layer pizza

Example of not that well organized layer structure. After finishing retouched image you don't always have time or energy to start reorganizing and renaming the layers. Putting them into groups, adding explanations or color codes describing what the layers are in image and deleting unneeded layers. Deleting duplicated base layers/merged layers and textures that are not used in final image can save lots of hard drive space. Keeping files tidy and compact will also make them faster to open & save. Saving time & hard drive space is saving money.

Poorly structured file can be called as layer pizza. Layer pizza = totally or semi-randomly lied out layer structure without proper layer names. Interpreting it later is like decoding DNA structure.

I have also heard stories that some people use Photoshop without layers...