Guide to Properly Zipping Edited Mod Jar?

[rancid ravine]

Ive looked through the FAQ and other forums to see how to edit terrain generation to create larger biomes, and one problem I've run into is that the re-zipped .jar file simply doesn't work. Is there a specific way you need to zip the folder? If so, how do you do that?
(Note, I zipped the files in the unzipped folder, instead of the folder itself like one support thread suggested)
I'm using Windows 10 and used 7zip to zip the file.

[eternal field]

Edit the datapack, not the jar. That way you don’t have to worry about making it a jar. The jar is just a datapack in a repackaged format

[rancid ravine]

Will do, thank you!

[eternal field]

Just note you aren’t allowed to edit it if you are releasing it publicly - it is only permitted for private use

The only thing you can do publicly is remove structures from the jar through a datapack that overrides them