There's always something a little wrong with a portrait. Even Sargent told his sitters "you can always fix it when you get it home." And, "a portrait is something a little wrong with the mouth."
Faces are tough because everyone knows when a portrait is off. Especially a sensitive artist like me. So I battle to get the likeness and I'm still intent on improving. Hands are tough too. My hero John Singer Sargent solved his problem by painting hands like flowers.
Check out my portraits too, many of which can be found by scrolling down this my blog.
Thanks for your compassionate ear.