"You have to be more careful"

Question

Here's my stab at it. Specifically, I am trying to say you have to be more careful with something, so there is a "con mis ___" after the sentence.

"Tienes estar mas cuidado" is my best stab, but it's certainly very different from what the translators came up with.

My opinion: "Tienes que ser mas cuidadoso/ cuidadosa con mis cosas." - 00b5f6c6, Mar 19, 2014

Answer 1

I would say: Tienes que tener más cuidado.

Answer 2

Tienes que tener más cuidado

Or also, tienes que ser más cuidadoso