HYPHEN? [1/3] Use hyphen to join 2+ words serving as 1 adjective before noun. (chocolate-covered pretzel, much-needed vacation)
HYPHEN? [2/3] But when they (compound modifiers) come after the noun, they’re not hyphenated. (The vacation to Slovenia was much needed.)
HYPHEN? [3/3] Use a hyphen to qualify an upcoming hyphenated phrase. (The parrot is a ten- or eleven-year-old.)
Point [2/3] was still tripping me up. Thanks, @thatwhichmatter!