Lacks an Authoritative Presence
The author also presents a list of various things that can be done (or avoided) to give yourself a more authoritative presence:
Touch
The author stresses the importance of a firm handshake, but really doesn't go into detail otherwise. My sense is that this is something that doesn't so much create a positive impression, but failure generates a negative one, so it's worth learning.
Punctuality
Punctuality is important: a person who is always in a hurry sends the message that they are not in control of themselves or their time. A person who is always late sends the message that they do not respect the time of others.
Expressions
The author suggests that facial expressions are very communicative, and provides a few examples of situations where an expression has been harmful, but does not provide any useful advice.
Posture and Gesture
The author stresses the importance of controlling your posture and gestures, and being aware of unconscious physical habits, but does not provide any useful advice.
Grooming
The key to grooming and attire in the corporate environment is "fit" - it is not so much a matter of expressing your personal taste and fashion sense as fitting in with those around you. Some organizations have formal dress and grooming codes, but in most places, you're given a vague description ("Business attire" or "business casual") and are expected to "get it".
Fundamentally, you can "get it" by looking at others around you and following suit, though you should attempt to appear neat and under control. It's also wise to pay attention to the next rank above you - "fitting in" with your supervisor, and seeming to "fit in" with management, will serve you better in the long run than fitting in with your current peers.
Your Space
Your office makes an impression on anyone who enters it. The author provides a few anecdotes, but no useful advice.
Presenting Well
Since presentations are common, the author provides a number of tips:
- Do not read your slides
- Maintain eye contact with the audience, especially when making key points
- Keep slide verbiage to a minimum (words are not visual aids)
- Do not constantly wander about
- Speak in a conversational manner
- Use gestures to guide attention (between the slides and yourself)
EN: There are more authoritative and extensive sources on much of this.