Conversation so far:
What did Charles Baudelaire next worked on in his final years?
Baudelaire next worked on a translation and adaptation of Thomas De Quincey's Confessions of an English Opium Eater.
What was Charles Baudelaire next challenge after translation and adaptation of Thomas De Quincey's Confessions of an English Opium Eater?
Other works in the years that followed included Petits Poèmes en prose
Why was the translation and adaptation of Thomas De Quincey's Confessions of an English Opium Eater. Other works in the years that followed included Petits Poèmes en prose bad for Charles Baudelaire?
Charles Baudelaire criticism turns against his friends Honoré de Balzac, Théophile Gautier, and Gérard de Nerva

Question: What was his next challenge
Self-contained rewrite: What was Charles Baudelaire next challenge?