During a presentation in English is important to highlight the main points of his message, and specifically to provide them. Here we come to the aid of the verbs in the imperative mood, which can orient and attract notice, pay attention. She was wearing new shoes but I didn't even notice. Take notice we choose, when a sentence has a tinge of negative attitudes, for example, someone willing and contempt does not pay attention to someone: Susan is always making sarcastic remarks about my work. – Take no notice! Idiom Pay Attention also attracts the attention of the listener to the speaker's speech. But the speaker always has in mind the conscious intention to direct attention to him all the right direction. Remember your school English teacher, who often repeating: Pay attention to my words! Precisely because of this Pay attention! rarely used in everyday speech, but useful during a presentation.
Notice and note similar, but have a small difference. Note draws attention and encourages to think and remember in the future. It is more officially. A notice adds to the message notification tone, for example: to give a notice – advise, warn, this word can be used in most cases when you need to direct the attention of party presentation call for observation or to make him take notes. The most archaic form that can be consumed to replace the previous ones – it's mark. But the phrase Mark my words! in speech sounds and often means: Look! Remember my words! Future will show that I was right! Such a phrase, you'll probably agree, should not be used in your successful business presentations.