If you want to get ahead, get a hat!

12345678910111213141516171819
Across
  1. 3. Meat and pastry hat (4,3)
  2. 5. Bambi botherer (11)
  3. 7. Engine covering (6)
  4. 11. Extracted from hat for unexpected solution! (6)
  5. 12. Bedtime drink? (8)
  6. 13. 'Just like that' hat (3)
  7. 14. Noisy safety headgear (5,6)
  8. 16. A triad of goals (3,5)
  9. 18. Handy for pointing brickwork (6,5)
  10. 19. An achievement for you (7,2,4,3)
Down
  1. 1. Hat for dodgy tradesmen? (6)
  2. 2. Commands attention! (10)
  3. 4. Colonial headgear (4,6)
  4. 6. Cricketing hat, perhaps? (6)
  5. 8. Fred wore it for Ginger (3,3)
  6. 9. Place to keep secrets (5,4,3)
  7. 10. Central American headgear (6)
  8. 14. Dental hat? (5)
  9. 15. Does this come in 57 varieties? (6)
  10. 17. Sikh and you shall find (6)