Try it when you are really tired, and or after having some good sativa, if that is safe and appropriate for you. I find my mind extremely receptive to these so

Try it when you are really tired, and or after having some good sativa, if that is safe and appropriate for you. I find my mind extremely receptive to these sorts of things when I'm very tired on the edge of sleep. A good sativa actually opens up quite a bit of pattern recognition and other subtle visual perceptions. One example I can think of is a cardboard box that actually has the manufacturer's logo lightly embossed. You can't really see it at least I never did. But one evening after a good meal and the sativa, I looked at that box and could totally see the subtle difference in the circle for the carport. Interesting lie, I have remained able to see it. Like a little doorway opened.