Now this way starts to make sense to me! The subconscious and the past are influencing the mind and the future then, right? I always wondered about this.
I like to start with the bottom card as it is the root of everything. Then the root, the past and the future. This way seemed the most logical to me.
Although her book is about Lenormand, Rana George has a section about using tarot and Lenormand together, and gives her version of the CC. I got a couple of new wrinkles from her that reinforce my own approach, so I'll toss them in. She brings in a little of the "above" and "below" flavor of the Grand Tableau that seems to fit well.
I won't go into the "covering" and "crossing" cards since they are more environmental and aren't moving forward in time.
The bottom card (that which is beneath), as the "distant past," represents what has been established and isn't subject to change. The foundation of the matter. Rana: "What the client has under control or what the client is accepting."
The card to the left (that which is behind), as the "recent past," shows recent developments in the matter that may still be working themselves out.
The card on top (that which is above) is one I've tweaked a bit. I was never happy with the "what may come to pass" notion since it kind of takes a detour from the "timeline" idea. So I just call it "the present as the realm of possibilities," which conveys a similar idea but ties it in to the temporal progression. The thought is that the situation is still "plastic" and the querent has a range of options available. I often see it as an awakening or a "turning point." Rana: "On the client's mind" (as in a "preoccupation").
The card to the right (that which is before), as the "near future," represents what I think of as an interim "reckoning point" that is still transitional and subject to influence by any action the querent brings to bear after taking stock of the situation. (This is also the last card that addresses the circumstances surrounding the question; the querent's status is shown by the "staff" positions.)
In practice, I read "behind, above and before" in a rather fluid way, since the recent past, the present and the near future are inextricably bound together and it can be tricky to tell where one influence leaves off and the next one begins. So I read the three cards as a closely-knit continuum.
Note that "behind" to the left and "before" to the right follows the convention that looking or moving to the left signifies the Past, and going to the right, the Future, regardless of which way the significator (if you happen to use one) is facing.