That is truly epic, Richard - an amazing NMM version of the Stormcast Eternal!
I think you could still improve the base by repeating some of the colors of the miniature and glaze them in some areas of the base (we call that 'combining' miniature and base, or 'harmonizing'). You could use some dark blue and some tank brown/yellow to do some glazes on the base and it's close to perfection.
Great job!