Possible Clues:

• Upside down — opposite in effect
• Contrary way — how Edward Lear worked?
• The opposite one, with bad nerves
• Contrary to how to write poetry
• The contrary Lear made his name here?
• Not prosaic? The opposite
• Opposite -- to prose?
• Not prosaic -- the opposite
• Poetically opposite
• Told in poetry, the other way round