Everything communicates -- everything a new leader says and does and doesn't say and doesn't do. Most new leaders get that. But many miss the unintended consequences of what they do and say and don't do and don't say on people they think are not directly affected.
To make the best possible impression on your new boss, you want to do more than simply show your "curb appeal" and solid eye contact. Going the extra mile to demonstrate your capabilities as a team member requires a bit of planning on your part, but will be well worth the time.