Slightly irritated because neither wind, nor lightning are opposite of earth, and fire isn’t opposite of water.
Circle itself looks good, though, and you probably had reasons to arrange the elements like that.
Light-Shadow
Water-Fire
Wind-Earth
And lightning is pure electricty / energy, that’s why all lightning-related mutations are energy-based. It does’nt have counterpart due to energy being its own entity that just manifests in lightning.