Possessive pronouns can be used to describe single objects or more than one. To describing something singular, you would use one of the following pronouns: “mine, yours, his, hers”. E.g. “The cat is mine.This round is yours.
A light shinning in through a glass, or a car window, or a window! Make sure you add color to make it pop :) You could use a flashlight as well, or the light on a cellphone.