Awesome! I had been working on a similar project couldn't figure out the snow on the trees for the life of me! It's great to see how you approached it. The work look great! Thanks for sharing your process.
I believe author would be surprised that it's not american, but soviet bunker :)
Tiled Automapping Tutorial The Basics
In this tutorial you will learn about the basics of working with Tiled free software.
© Stefan Beller, 2015 https://www.youtube.com/channel/UCfVGMUaoBlmNs_4EX0w8Fgg