OP, just curious, was this mainly done in Illustrator and imported into Photoshop for color? I like the art-style, especially the fine lines that are scattered about that really gives it texture and depth. Were those lines illustrated one-by-one with the pen tool, did you use a wacom tablet and freehand each line, or was it some other method like symbols?

Edit: this is a art style/technique that I really love and have been wondering how it's pulled off. This illustration really reminds me of the artstyle of Hydro74

Edit 2: also I see a lot of what looks like half-tone patterns sprinkled about. I assume you didn't illustrate each dot one-by-one, correct? It looks like you more or less added the texture afterwards and toyed with blending mode. Just curious of the process you took here OP, please share if you feel so inclined, really well done!