How do you differentiate between being nurturing and being mothering?

I wanted to know how you ladies show your man or the world that you are a nurturing and caring person while avoiding mothering a man . What are some common mistakes you see or have done yourself, where a woman thinks she looks nurturing but shes crossing the line to more of a mother figure? Not only with actions but with communication. What are some things a women should avoid? What are some non obvious things woman do that cross the line into mothering?