This was the first time I tried shooting for something like this. The first shot I focused on the first wall, the second for the black second wall, and the third were the joshua trees through the window. I stacked the together and erased the parts I had to in order to show the next layer. Each layer was processed individually. The original full size has some intense detail. Being at a 90 degree angle to the lens made it kind of easy. Gives me a few ideas to try out.
I like this - both what you have done and also the subject choice!
I have seen a lot of focus stacked insects, but fewer images like this - great creativity