I think they look alright as dunes. It all comes down to the scale and color (for my maps at least! My dunes tend to have less substantial edges but seem to be the same size, in many cases, to my hills).

Quote Originally Posted by rdanhenry View Post
Dunes are just nomadic hills, so they're going to look similar. Throw a sandy color wash onto those and I think they'll do fine as dunes.
I love this description. I can just picture a hill with a small bag-on-a-stick over its shoulder walking into the distance