Give three examples of Decius using flattery to get Caesar to the Capitol.

Decius advises Brutus that he is quite sure he can "o'ersway" Caesar, even if he has "resolved" not to come to the Capitol. He says that flattery is generally effective in persuading Caesar:

But when I tell him he hates flatterers,He says he does, being then most flattered.

Later, when Caesar asks Decius to tell the senators that he "will not come today," Decius calls him "Most mighty Caesar," beginning to wear him down with flattering epithets. Later, Decius offers a reinterpretation of Calpurnia's dream which paints Caesar as a font of goodness: "from you great Rome shall suck / Reviving blood." Caesar is, indeed, swayed by this argument; he allows Decius to convince him that the vision of a statue spouting blood could actually be a positive sign.
Finally, Decius appeals to Caesar's desire for general approval and praise by telling him that the senate has decided "to give this day a crown to mighty Caesar." If Caesar does not come to the Capitol, Decius says, they might change their minds.