a new world, of fantastic creatures and upside-down scenery about to change the protagonist life

what is reverealm? a day some years ago i had a dream while sleeping, a world upside down with breath-taking views

since then couldn't forget that world positioned under the planet earth "reverse realm" and decided to make it into something, still work in progress and in majority nameless,
i hope a day to turn it into something concrete maybe a comic or a videogame
my main problem is writing because i'm not a writer so been always my worst block, also while sketching down the world behaviour on phone notepad lost all the word building,

ocs art and introduction
world building and scenery