First, make sure you know what size city map you need... the minimum map size you should use is "Large"... click into the File menu and click on 'New Map', 'Large Map'... (remember the fact that not everyone has the same building style during gameplay... some may make compact city designs, others may be all over the place - then factor in any sanctuaries and military)
Next, set up your water... create your harbors and rivers, remembering the fact that in order to navigate any waterway with a ship - Trade or War - you need a minimum of three tiles between shores.
Next, your 'plateaus'... click into the height menu, and create your plateaus/mountains with the "Raise Land" and "Raise Land High" choices. After all that - and it can be tricky; remember to leave at least one tile of open land between the plateau and any water - make sure you add your Access Ramps.
Next, your Scrub... click into the "Scrub" menu item, and 'plant' scrub all over the place - the more often you go over an area with the cursor, the thicker the Scrub will be. If you place a plateau after you place Scrub, you'll have to place the Scrub again over these new plateau areas.
Next, your Meadows... a 'Small' or 'Medium' brush are your best choices... the more often you go over a section, the thicker a Meadow will be - but any Meadow is preferable to none.
Next up, your Rocks... add Rocks, Cliff Rocks, and any quarries (normal and Black), along with any Copper Ore or Orichalc Ore.
Penultimate, lay out your Trees... a 'Tiny' brush is best for this, unless you want a gigantic forest.
Finally, add your 'Points'... Entry and Exit Points, River Entry and Exit, Monster, Invasion (and the 'Disembark', if you have Water invasion Points), and any Wolf (Boar, Deer) Points.
Your design style will probably be different than those you've seen in the game... so whatever.
Just remember that you can 'import' city maps, either through the menu, or through Windows Explorer - for instance, if you've got a city map in the adventure "Monster Massacre", you can import it to "Grecian Formula" by copying it in Windows Explorer... if you want to import Abraxas colony from "Monster Massacre", and that particular colony is the first on the colony list, the Just remember that the "*P.map" (whatever your adventure happens to be named) consists of not only the parent city map, but also the world map.
Just remember that the "*P.map" (whatever your adventure happens to be named) consists of not only the parent city map, but also the world map.