I recommend WASD20 on YouTube to learn how to draw maps and features on maps. (I taught myself but I sometimes watch his videos) If you have a character from the roleplay you can remix the map and put where your dragon's den is.
Drawn in FlipAClip on a Kindle. The dark lines and weird shapes are rivers and lakes/ponds, the squiggly lines are mountain ranges. The black stars are capitals or the ruins of human civilization. The bluish-grey lines around the continents and islands are waves and the bronze patches are forests.