At this time the map editor is not finished (i think 80% when i tested the last version 2 days ago).
Kami is still working on it.
But i'm not sure that you will be able to map, not because we are not looking for mappers, but because our program is more looking like photoshop than paint, if paint is compared to RPG MAKER.
I'm sure that Spira will ask you for help here if we need.
Merry Christmas !
(sry for my english, i'm french :D)