Don’t tap the pen or twiddle your fingers on the table. That makes you look like somebody with lesser attention span.
This too is a sign of impatience. Avoid that.
This is a gesture that makes you look arrogant or defensive. Avoid this one too.
This is a sign of hurriedness; the one that you must avoid.
This shows a lack of respect for the decorum in general. The one you must avoid.