Analytical 2D Rendering Technique - PSD + Procreate

This work was painted in Photoshop using an analytical approach, decomposing the lighting into different physical components. 

Photoshop original file PSD in full resolution. Also converted to Procreate in 3000px tall (No time-lapse video)

All layers well organized and named. (Update March 2020: Improved and simplified the layer organization to make consistent with my current works)