I'm sending out mail to several countries. The postcard is for Postcrossing while the letters are for my regular pen pals (from the USA, Germany, and Indonesia), my prison pen pals, my soldier pen pal, and More Love Letters.

For Postcrossing to Russia:

Front

Back

Letters to the USA, Indonesia, and Germany:
How one of the letters looked:

The envelope

The cute watermelon greeting card.

All the letters together: