【Work in pairs】
Imagine that these people are greeting you when you arrive as a visitor in an unfamiliar office. Discuss these questions in the following posts:

What impression does each person give?
Which person seems the most welcoming?

【Work in groups】
Discuss these questions in the following posts:

What impression do you try to give to the people you deal with in business?
What impression do you try not to give?

Add some more adjectives to these lists:

I try to be: pleasant sincere efficient ________ _________
I try not to be: unfriendly shy aggressive _________ ___________