*Do I need to create a certain file or code? Yes, a good structure will save you some time in the future.
Here is an empty example mod-folder to start with:
Instructions: =place=> the "myMod" folder =into=> C: ...user_name... /Zomboid/mods
You can toggle the mod in-game (and see how it works). And even select it as a spawnpoint, but do not spawn a character.
myMod-structure: - mapfiles: generate your _.lot files inside this map from WorldEd (Generate Lots...) From here you can place/copy them inside the Muldraugh,KY folder. Doing it like this will make the mod/files easy to share with others. - media : this map has files inside that lets you choose your 'map' as a spawnpoint in-game. The important file here is "spawnpoints.lua" ,if this is empty your character can not spawn. - mod.info: a text-file with information, that will show up when you open the "Mods" tab in-game. -myMod.png : a picture that is used together with 'mod.info' and is visible in the 'Mods"tab.
The World Origin numbers are your map coodinates. You can see them in WorldEd->View->Show Coordinates (the upper cell will have 0,0).
So when you press 'Generate Lots->All Cells' and you change the World Origin numbers (0,0), the coordinates of the upper cell are changed first, not the middle one.
Yes, that sounds Ok to me(sorry, I'm no expert), but you can also use Mapzoid and afterwards TileZed to add/remove a little bit of terrain. 33x33 cell's is huge, CzarUltra. Why not start with something smaller first?