Adding Planets - Guides?

Hi guys,

There are several threads here regarding custom planets and tools to add new ones, but is there a guide anywhere (couldn't see one) that describes the basic process of adding a new planet to your game and any configuration changes you need to make to get it to show up?

I'm thinking of renting a server at some point and would like to get into creating/adding some custom planets, so any guides and tips would be great.

Thank you.