Brittany, you’re so right about the bulleted checklist! I’ve seen that used before: he had brown hair with a slight curl, brown eyes, and a square chin. He was a little over six feet tall. He had broad shoulders.
I agree about limiting the number of POV characters, particularly with newer authors who are likely to struggle with handling character development anyway! The more characters competing for POV time, the easier it is to make readers not care about any of them. It seems a little counterintuitive, that if you want readers to care about your characters you can’t make them all the focal point, but it’s true!
The idea of asking family/friends for feedback on writing the opposite sex is a good one; I think as DEs we tend to underutilize the suggestion of finding betas for various dev problems.