"Cool with some hints about how it's done, jpegs aren't going to be very easy to build on, so will the actual source files that can be edited with a cad package be released?"
"It's basically zero work if you already know the tools and if you aren't using a version control system already then you are doing it wrong, even if you are the only one who is ever going to access the source.
"The ground planes have two purposes:
* As a solid plane of ground to allow low-impedance ground connections all over the board and provide better noise immunity and reduce noise emissions.
* By filling as much as possible with copper, so the empty…"