Singing the Blurb Blues

Hello Everyone! I hope all is well and everyone had a nice, relaxing 4th!

My art director is putting the jacket cover design together, and she needs the blurbs… however I don’t have any yet. 😧

Does anyone know a good resource (can be human or not) to use that can act as a good guide to writing children’s book blurbs and author blurbs?

Thank you soo much in advance!