Criostai's Valentine's Cryptic

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Across
  1. 5. Capital letters in many answers should be examined first (4)
  2. 6. An owner of novels, grandma assures it is inside (4)
  3. 8. Supplement aim in TV, converted before short date (7, 1)
  4. 10. Beginning of resolution in the song (5)
  5. 11. Celebrity analytics briefly after two (5)
Down
  1. 1. Kilo of tundra matter hidden on show (6)
  2. 2. Name how Santa calls to protect (6)
  3. 3. Study charity, spy what is askew (10)
  4. 4. Name a way to spoil Ireland in short (5)
  5. 7. Singer spends some small change after French wine (6)
  6. 9. Drink tea with a small feather in it (7)
  7. 11. A place where grey is found a bit different (4