Will you help me correct any grammatical errors?

Just a few things. A period after "revealed" of S1. A long sentence is not grammatically wrong with proper punctuation. I'm not really good at grammar but I'll do my best. After "background" of S2 perhaps a semi-colon instead of a comma separating 2 ideas. A period after "wide" of S2. Comma after "night", a period after "blight". A period after "hit". I'd prefer a semi-colon after "begun" of S3. A period after "sun" of S3. Hope that helps.