The reason I say that Rosalie would be a housewife and not a model is because she always wanted a child and husband, a family. Also, I don't really know what Esme would be, and Carlisle is already a doctor. :)
Edward: Doctor or musician
Bella: Writer, teacher, something like that
Alice: fashion designer
Jasper: psychologist or history teacher
Rosalie: something to do with cars
Emmett is the one I have trouble with. I can't figure out what he would do.
Edward: Piano teacher
Jacob: Motorcycle handyman
Bella: She can draw in customers to Jacob's motorcycle business.
Jasper: Psychologist would be perfect.
Alice: Party planner
Rosalie: Beauty pageant coordinator
Esme: Nurse at a children's hospital, since she's motherly.
Alice would be a fashion designer. Jasper or Bella could be an actor because they can both control feelings, Bella her own and Jasper others. Rosalie could be a hair dresser since she's always careful about how she looks and she made Bella's hair beautiful for her wedding. Edward could be a nice musician. Emmet could be a baseball player. Esme could be an interior designer (if that's what it's called ). Renesmee could be an artist since she can make images. jacob could be a mechanic or someone that does extreme sports.
Carlisle- Still a doctor
Edward- Soldier (like he wanted to be) or teacher
Emmett- Weight lifter or Personal Trainer
Rosalie- Mechanic (she's good with cars) or Beautician
Alice- Fashion Designer
Jasper- Soldier (again) or Historian
Bella- Biology teacher or scientist or something like that