@pam-boutilier I really can't give you any advice on portfolio pieces and what should go into them. I would say whatever style you are happy working with, go with that. You want to be happy with whatever you end up doing otherwise you will eventually regret it.
I really like the style and render in your final render of cozy cuppa. It feels warm and fuzzy. FYI The work on your Instagram is amazing. Whatever you decide to do, i wish you the best of luck!