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Carefully begin laying the pavers on the prepared sand bed, working from a fixed starting point (e.g., against the pool coping or a straight edge). Follow your chosen pattern (e.g., herringbone, running bond, or a custom mixed pattern as shown). Place each paver by hand, gently setting it into position. Use a rubber mallet to tap pavers down and seat them firmly into the sand bed, ensuring they are level with adjacent pavers. Maintain consistent joint spacing and use string lines or guides to keep rows straight and curves smooth.