I'm interested in a nuts-and-bolts discussion of this issue. I'm a member of a writing group of five, 3 of which are women, so I'm getting pretty good feedback. Nevertheless, I've never felt as confident writing women characters as writing men.
I'm also aware than there is a tendency of writers to consciously telegraph feminist issues, particularly in film and television writing, where women must have certain attributes in order to be PC: e.g.; they work out, they know self defense, work as supervisors of men, work in professions that a few years ago would have been difficult for them enter -- but these things have become so obvious that it seems that male writers in particular have traded one set of cliches for another.
I have women characters in a novel in progress and I have already overdone it. I have an African-American nun who runs a shelter for trafficked women. She is also a PhD, MD and has a black belt in Krav Maga. I started laughing at myself, and immediately removed the black belt. It seems that I was redressing the balance, but going off the end.
What is most useful to me is the subtle, non PC things that men miss in writing women. I've already learned some of them from my group, but am open to a creative discussion of the issue.
I look forward to your posts.