Embellish means "to make (something) more appealing or attractive with fanciful or decorative details."
// As they grew older, the children realized their grandfather embellished the stories of his travels abroad.
// The gift shop had cowboy shirts and hats embellished with beads and stitching.
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"Well, I've always wanted to write a children's book. This is just partly based on a story I used to tell Krishna, my daughter, when she was going to bed at night, but we just embellished it and embellished it." — Padma Lakshmi, quoted in Bon Appétit, 27 May 2021