[Request] How to create an "improvement mod"

Looking for a guide on how to get started with an improvement mod. Essentially, how can you create working package which overrides certain default aircraft files with custom/improved files.

Moved to #sdk-discussion:aircraft. The #sdk-discussion:tutorials is more for the actual posting of written / video tutorials and guides relating to the SDK. It’s best to use one of the subcategories for discussion.

i want to know this too, i am wrecking my brains over this.
i wanna replace x files and add x files to the airbus to improve it’s cockpit lighting.