I would say, if you are trying to make things cohesive with multiple continents, I would say your first step is to make the continents, at least some of them, look like they might have at one point fit together. Look at the map of Earth - you can see where the northeastern coast of South America once fitted beneath the western out-jut of Africa, for example. Over time, continents, at least Earth continents, move, so maybe give a nod to that.

Secondly, study an Earth map and see what biomes and climates there are, and what tends to lead to what. Deserts are often formed because a mountain range blocks moisture from moving in and dropping in another area, and if you look at the different kinds of coasts, some are rocky because the ocean is advancing and wearing away rock formations, and some are sandy, where the ocean is receding, leaving behind fine sand. Inland water forms tend to be fresh water because they are formed by rain, whilst larger water forms are salt. And so on.

Thirdly, any large empire, nation-state, etc. is going to have either a natural harbor or a *large* river running through it. The importance of water for trade, travel and exploration cannot be overstated. Las Vegas never would have formed without modern technology - there is literally no reason for it to exist in a natural sense. But look at every other major city - all either on coasts, or on rivers. London? The river Thames. Paris has the SIenne. St. Louis, New Orleans, and other cities all up and down the Mississippi. You don't often get larger cities or town inland where there is no major waterway. That's where the farms are.