Possible Clues:

• Licking strike that's irregular
• Complaint about book? It's brilliant
• Brilliant hit produced by personal aptitude
• Glowing with soft radiance
• After a half-century of playing around, I have a tendency to be a crook
• Young animal, about ten, moving about lightly
• After half a century I'm a crook, due to playing around so lightly
• Shining example of complaint about book
• Mary had ten that's playfully glowing
• By playing, I get to be a crook after half a century