Here is another example of a really good headshot. The problem we have is the arm and body looks awkward and is distracting.
With a little tighter crop we eliminate those distractions and come away with a really nice and effective headshot.
The crop not only makes her more prominent in the frame but helps make the image stronger for online castings.
If you missed the post on online casting images heres the link
headshotcafe.com 
Who is the actress?