They are fun to write about. I've decided not to make them small, even though much contemporary writing keeps them as little people. There's also a long tradition that suggests that they are the same size as people.
What a beautiful map! Traditionally, cities arise near bodies of water - a river, a bay, etc. - because these allow trade and travel. (Sometimes, cities are close to water but set back a bit to avoid attack / pirates / etc.) Would it help your writing to move your cities closer to your rivers...
New member: happy to be here. Just finished drafting a medium-length fairy novel with a queer focus; it still needs work. Eventually would love to be able to discuss it. Looking forward to chatting.