below is how you stand at attention. You should be perfectly still.
Step 1: Front stance (zenkutsu dachi)
(picture 1, and 2)
For a left front stance, push your right leg back and keep your front leg bent and stationary.
For a right front stance, push you left leg back and keep your front leg bent and stationary.
Always bend your front knee until you can't see your toes. Your back leg should be as straight as you can get it. Your back foot should face forward as much as you can get it.