Origami Heart Advent Calendar

I wanted to make a simple home-made calendar for Mila.
Since I had some left over origami papers from my wreath,
I googled "Origami Heart Envelope" and found these
folding instructions.

I tried to put mine in a shape of a christmas tree...
bigger heart would be nice too.  Or star?

I'm pretty sure that Mila is not one of my readers yet, so I can
reveal some of the little surprises I put in those envelopes:
Cute stickers and organic, fair trade chocolate chips.