Using the rule of thirds, I would try placing focal points at the intersections. Although with that much rock it would probably take a lot of glue/epoxy. It really depends on how much you want to put into the rockscape. At the end of the day beauty is in the eye of the beholder, but I would redo it if it were my scape.
PS bulk reef supply on YouTube has a great video on aquascaping using the rule of thirds - good luck!
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