In simple terms, scrubbing the stain only made it worse. Exacerbating means to make something worse than what it already is.
My mother, whom I love dearly, came to my show and cheered for me.
The life lesson that could be learned from this chapter is that when facing with a difficult situation or a crisis, we should overcome terror or fear in order to make a decision and take action. It might be implied that sometimes a person can succeed and other can fail but there is always a choice.
When the narrator shines the single beam of light on the old man's eye, that left a picture of the situation for me.
Another is when the narrator is hearing the heartbeat from under his floorboards and pacing around the room, growing more and more agitated until he finally confesses to the murder.
What story are u talking about