5 nonverbal communication cues all great speakers have mastered

"Make sure 'business casual' is not 'business careless,'" Price says.

Professional attire, such as suits or jackets, should be worn to important meetings and presentations, especially with senior leaders and customers, she says. It's also important to avoid showy accessories, busy patterns, and tight or revealing garments.

Price cites the common phrase: "It's not what you said; it's how you said it." If someone has ever said this to you, they are referring to your paralanguage, or tone, she says.

"Separate from the actual words used, these nonverbal elements of your voice include voice tone, pacing, pausing, volume, inflection, pitch, and articulation," Price says. Recording a few of your conversations can be a good way to identify the emotions your tone communicates, she says.

In an increasingly digital age, constantly checking your phone or emails may seem discrete and standard, but it should be avoided. Multitasking can often be "perceived as disinterest or disrespect," Price says.

Offering your full attention means using open body language, which includes uncrossed arms and legs, squared shoulders, and portraying clear engagement in the conversation, she says.

The importance of maintaining eye contact can't be overstated.

Simply glancing at members of the audience is known as the "eye-dart," Price says, and it "conveys insecurity, anxiety, or evasion." The key is to maintain direct eye contact for at least two seconds before moving to the next person, she says.