Possible Clues:

• Try again on empty stage to prepare for performance
• Practice for the performance
• Try out soldier's last conveyance
• Just about the last thing you's be seen dead in for practice
• Tries again with energy to practise
• To prepare, he corrected with eraser
• Go over the line?
• Practise for performance
• Recite - try out
• Practise Villiers farce?