Information requirements:
The dimensioned drawing can be anything from a hand drawn sketch up to a full CAD 3D model.
Artwork such as logos and icons need to be in a vector format so that we can resize them without losing resolution.
A list of fonts being used for any text.
A list of components being used in the end panels would allow us to double check the cut-out dimensions against the manufacturers specifications to determine the best cut-out size and method to use; be it punch, mill or laser cut.