Basically the only right way to draw maps is thus:
Water is not walled off, only walls are walled off. All water must be mapped with blue color. When applicable, transportation across gaps must be noted on the entry points and exit points of the transportation. If the gap is water, don't wall it off. If the gap is open air, it is acceptable to wall it off. Stairs are inclusive to the map, do not wall off the stairs completely. Doors have walls on two sides. Do not wall off the doors. For games without the harvesting icons, sparklies with annotations are the only acceptable way to map a harvesting point. Events are denoted with the E, with annotations if not a one-off, chests with the clover unless there is a chest icon (annotations with contents optional). The chests and events should not be walled off, and should be colored in underneath.
Color beneath stairs and doors. Locked doors have the closed door icon. If there is no closed door icon, coloring red or yellow underneath is also acceptable.
Damage squares are red and not walled off.
Shortcuts are denoted by walling off the entry and exit points, and using the applicable arrow. Do not fully wall off the arrow.