It's hard to fix some habits on the dance floor. We have to fix them in life, then it's easy on the floor.
Eric has said "eyes up" to me occasionally, and we discussed it last week because I had one of those "Ah-ha" moments. While he had said it in the past, I was too worried about other aspects of the exercise to pay much attention to that specific comment, assuming it was because of my concentration at the time.
Then I saw someone else in a class looking slightly down during an exercise, and realized "hey, that's me." She wasn't looking at her feet, but she was looking a little below eye level. It wasn’t a great look on an otherwise accomplished dancer. I had never noticed it before, but it was so easy to see why that doesn't work when I saw it on someone else.
After seeing her and becoming aware, I realized I look slightly down when I'm not dancing. It's subtle, and I doubt most people would notice directly, but it doesn't look right while on the floor. Eric said I could fix it by bringing my chin up about a quarter-inch or so, and after reviewing I see he is right. It's not a big change on one hand, but years (decades?) of doing something different make it a tough adjustment while dancing.
Then the obvious thought hit me again. If I walk around 15 hours a day looking slightly down, it would be really tough to fix it while dancing for a few hours. I need to make looking at eye-level part of everything I do, and then doing it while dancing will be easy.
Recently, I started practicing "eyes up" everywhere, including when I'm walking to my office, standing in the kitchen, shopping at Home Depot, taking a shower or brushing my teeth. Rather than focus on this fix when I hit the floor, my goal is to make it part of my overall look all the time, especially outside the dance studio.
This concept applies to posture, balance and many other dance elements. Some things can't be fixed on the floor alone, but instead need to be a part of your day-to-day life if you want them to stick.
It's why strong dancers, gymnasts and many athletes carry themselves with great posture outside of their professional life, because it's tough to be hunch back all day and gracefully elegant while dancing or performing.
Now I am not worried about mastering it on the dance floor, I'll get it right during the day, knowing over time it will be natural during the dances.
Let me know what skills you are practicing in life to upgrade something in your dancing!
Have the courage to be ignorant of a great number of things, in order to
avoid the calamity of being ignorant of everything.