+1
The only thing is it's a little specific. I used to use paint to get a general idea as well, more like if I like a big central mount, a 2 island setup, etc. The chances of actual rock matching are next to impossible, but as long as you keep that in mind and are just going for a general design, high in the center, sloping down to the outside, big cave up top, etc, should have a good time
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