Mail-Art Postcard

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Across
  1. 3. Giving one thing and receiving another
  2. 4. Relating to light
  3. 5. The expression or application of human creative skill and imagination
  4. 6. English word for cadeau
  5. 7. Photo and video-sharing social networking service
Down
  1. 1. Without cost to the recipient
  2. 2. Feline run don't walk nom du guerre of a narrative photographer
  3. 4. Piece of mail often with a picture on one side
  4. 5. Small works of art exchanged by mail