Do you mean he failed at writing his own book, or the teleplay for the miniseries?
In the case of the topiary animals, it was really up to the director and special effects department to realise these successfully (which they were, until they were filmed 'moving' which was not a good decision).
Kubricks re-imagining of the story was faster and more furious, and would suit the adult cinema screen more than this miniseries - which was a pleasant and occasionally scary four and a half hours.
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