Master file for this work.
Not a too complex technique, basically the shading in this case is just a light layer over a darker color base of each color (like the thumbnail of the post that shows the main shading folder). I use this approach for some quick pieces mostly (instead of my normal both shadow and light rendering layers over a medium base workflow, which require more levels of shading).
Download link: https://www.dropbox.com/scl/fo/4sbqzi5lky9ojsck7idzg/AMV9FWlJVcEbFhWKp-Ada48?rlkey=9jc0c38kavgwjp484zv7s8r2j&st=3i00wjf1&dl=0
Note 1. You need a program that can open either .sai2 or .psd files to view this file.
Note 2. I painted this on SAI 2 but uploaded .sai2 and .psd versions in the folder for compatibily sake for those who dont have SAI 2. The content is the same.