This instructable is going to show you how you can make a cute mini envelope, Please do not try to post this in a letterbox as it might get lost and we don't want that happening do we?
Anyway, lets get on with the parts list.
You will need a small square piece of paper (15cm x 15cm should be fine) and you will need a pencil or pen to write the message.
Lets move on to step #1
Step 1: Your square
This is the square that I made and it is about 15cm2.
You will need to fold it diagonally so you can find the halfway mark