Throughout the Fane of the Night Serpent in the D&D module Tomb of Annihilation, adventurers encounter Pillars engraved with snakes.
This is my take on it, with the snake decals as an optional add-on. It would be very easy for you to replace the snakes with your own decals, either two per block, or one bigger one:
width 7 mm (14 for one), height 5.5 mm, depth 0.2 mm
The style is inspired by various aztec columns I found on the internet. There's a slight difference in depth between the blocks in the middle, to show them as stacked stone blocks.
The size should work for both 25mm/1 inch and Wyloch style tiles.
eSun PLA Pro (PLA +)
The column prints supportless and I suggest a brim for stability. I used the default Draft mode in Cura 3.6 (0.2 layer height). The print took about 1h20.
Snake decals (x24):
The decals also prints supportless but do NOT use a brim as you won't get them off. Print these solid and with small layer height. I used Siepie's 0.08 and the print took only about 5 min for 24 closely arranged snakes.
There's two orientations of the snake, you can either let them all face one direction, or face each other.
Simply glue the snake decals on with a very fine amount of superglue, two per block and side.