concept art background:the lost building of......

Good day all, today ill be sharing a concept deign i did a long while ago, without even a sketch though.
I just wanted to do something to get rid of the art block in my head, so this was what came out, just some simple color blocking and shading, and these are the processes below:
first i blocked out the layout colors

add the building details,

then i add my atmosphere mist
, and then add the final lighting
that's it for now, have a lovely day, and see you in the next one