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Glad you like them @erb and thanks for your curiosity!
Here are the original images in order:

IMG_4001.JPG
moss, sticks & stones in the temperate rainforest
IMG_3993.JPG
an old shattered stump
IMG_4007.JPG
mossy underside of layered rock

Wow this is fascinating to see the starting points, thanks for sharing! It's amazing how they become completely unrecognizable in your transformations. The first one has such an architectural feel to it, I'm really surprised to see it came from a photo of a muddy forest floor. Well done.