Can I put mortar over the first layer of stucco?

I ran out of stucco (well not enough left for a full second coat), can I put mortar over the first layer of stucco?

Are you planning to put brick veneer or applying a few layers of paint to that second (mortar) layer? How is it going to be sealed / covered?

Thanks. Yes, it will have a veneer. I am moving forward with a stucco recipe of sand, Portland and lime. Thanks for the help!