Hi Karen,
Good approach to helping your students to be successful. Something I try and impress on my students is that I am not trying to be critical of their work because I enjoy doing so it is because I want to see them grow and develop in their expertise. I explain to them that if they will work hard on their projects, I as an expert in the field will give them the benefit of my experience and expertise to help them get better. Once they graduate I will not longer be available to them as a resource so if their writing or communication skills are weak no one will let them know except their bosses and customers. I explain those individuals will let them know by firing them or taking their business somewhere else. That is a harsh penalty for not having the skills. This is why I ask: "Why not let me help you develop those skills now in a safe environment where you get accurate and supportive feedback so you can enjoy success later on in your career?"
Any questions about this let me know.
Gary