New flag, new beginnings

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Across
  1. 3. The national plant of New Zealand
  2. 6. Very good
  3. 7. Result
  4. 9. Think that something is something else
  5. 10. Of today
  6. 11. Imagine the answer, while not being certain
  7. 13. Brief and striking
Down
  1. 1. Something difficult that you did
  2. 2. Proud (noun)
  3. 3. A simple design which represents a country
  4. 4. Strong (noun)
  5. 5. Calm, not angry
  6. 8. Real, in fact
  7. 12. The national bird of New Zealand