How should i start off my book?

The book is about a girl named Jade Kendle she is the kid of Doctor kendle and the best cake designer in the world and she is in High school becoming a model and she is very popular. I think that the opening should be like a call from her manger or something
PLEASE HELP ME
she is the kid to the cake disnger she isnt it her self it is her mom that is the best cake person in the world

With the beginning.

Oh, and come up with Your Own ideas. It’s not right to ask other people to do all your work for you. Writing does not always come easy, so be patient with it. If you don’t have an idea right now, wait.

Fab 5 ft Jade kendle