How do you place realistic hills? Where geographically should they form?

[Tiana]

Thank you!

Yeah, I haven't placed lakes yet, in case I needed to change my hills, and thus change my rivers.

Can you elaborate what this "second pass over the watershed" should be? Are you saying in the places that they meet and fork, that I should add small hills?

Where do you find the best places to put lakes? I was intending of putting most of them where rivers met. Can there be lakes that are not connected to rivers?

Yeah, small hills, or if the river has been following that path for a long time, you can even have the river cut through easily movable soil to form a river valley.

There can totally be lakes not connected to rivers, although at a large scale you're probably not going to see these little lakes and ponds. Those form because say, rain gathers in a low region, or it's been dugout to intentionally reach the water table, or it used to be attached to a creek but that creek has dried up and abandoned a pond. My favorite region to look at for lake inspiration is, of course, the Land of a Thousand Lakes–Minnesota.

Love the confirmation, Azélor.