I've moved onto finalizing the concept for the realm of Hell. At first the progression was to travel across regular looking islands but as this looked too generic and non-Bosch I've decided to put in a little more chaotic architecture matching silhouettes from Bosch's painting. I'll move onto toning and colouring the concept and move onto the other two realms.
Original
More Bosch
Rough 3D mock up (based off the original concept)