Disclaimer: I cannot do origami, so the flowers are very simple. I'm almost certain you can do better.
Step 1: Materials and Design
-coloured paper (I used foil from mint aero chocolate for leaves. It's shiny and the flowers smell like mint chocolate. you know the old chesnut about flowers or candy? here is kind of a solution that fails on two levels while meeting both criteria. how romantic!)
-green pipe cleaners
-a metal washer
-a letter envelope and a business size envelope
first, what do you want the flowers to look like? what colours will they be? I choose yellow and blue, and my two varieties are pictured below.
Step 2: Counting and Folding and Sending Away
Make the folds on your pieces of paper and crease them carefully, but unfold them so they can be flat. Then, write instructions on how to complete the flower on the letter envelope, write how the flowers and leaves can be attatched to the pipe cleaners, suggest cutting the wire to different lengths, and that tying the wires to the washer will provide stability. Then put everything into the big envelope (the pipe cleaners need the space) and mail it to your desired location.