Terrain modeling using the displacement modifier with subdivision surfaces. Modeled in Blender and rendered using Cycles Render. Using the "freestyle" functionality to simulate pencil stroke outlines.
Texture resources used:
https://www.deviantart.com/hhh316/art/Seamless-Dirt-Ground-texture-268208528
https://www.deviantart.com/yughues/art/Free-Grass-Pack-179052021
https://www.textures.com/download/grass0166/51527
https://www.textures.com/browse/sharp/93037
https://www.textures.com/download/wicker0020/39759
https://www.hdri-hub.com/hdrishop/freesamples/freehdri/item/76-hdr-sky-cloudy