Feel free to add to this list or offer suggestions.
:pointr: People provide me corrections on my anatomy/perspective/etc but I'm not growing
You're probably getting the solutions without understanding the formula that can help you extend and connect the solutions. Go read some books and draw from life. If you can't observe from life, use a mirror or photo while keeping in mind that photography can lie because scientific shenanigans can make the photo distort lines, shapes and colors. It doesn't perceive light as the naked eye does.
Remember, pictures are made from drawing mediums and/or optics but we see them as just shape, line, color, a