An additional decision that must be made in terms of perspective is tense. Though multiple tenses are necessary in any writing, most authors work with a primary tense of either present or past, where the character either is performing the actions as they speak them (present) or is telling the story as though it has already occurred (past).
These basic POV elements will be mixed and matched throughout most stories. If an author chooses to use multiple points of view (usually alternating between chapters), even more mixing and matching may occur. However, it's important to know which base POV you are working with.