Super basic way I learned to read combos is just watching how the images interact.
Like, are the figures looking at each other or looking away? Is a card turned away from a solution, moving away from something dark, or stepping into something tricky?
I usually read left as past, right as future. Are the cards facing forward or stuck in the past?
Also notice if they’re in harmony or conflict, both standing firm or one kinda falling over.
For me the pictures are trying to tell a story, so just watch them and see what comes through.