The lesson
Organize a customer story as numbered use cases, each with its own headline and win, rather than one arc ending in a single result.
The hero pairs the title "How Hex increased inbound win-rate 50% using Clay" with a stat card, "88%" data gap filled versus the previous enrichment vendor. The body then runs "USE CASE 01" ("Qualified website visitor signal increase win rate 1.5x"), 02 ("Filling data gap with unique signals needed for technical enterprise deals") and 03, each with named quotes.
Don't copy Hex's metrics or the 80/20 enterprise and self-serve setup. Keep the numbered use-case structure and the habit of bolding the key result sentences.