I'm going to show you how to make origami ball, made from blossoms.

Step 1: Materials

You need:

post-it notes
double sided tape or glue
scissors (for the tape)
and some time :D

Step 2: Folding

Take one post-it note and fold it in half to make a triangle (picture 1). Fold the dash line to make a diamond (picture 2). Return the left part in the previous position (picture 3). Fold the right part in half (picture 4). Make the same with the left part (picture 5). Then fold the whole model in half (picture 6). Fold in half again like in picture 7, but this time put the smaller triangle under the bigger (see picture 8 for the result). Fold in the dash line and again put the smaller triangle inside (picture 9). The model is ready.

Now make another 4 leaves in the same way.

Step 3: Connect the Leaves

Now let's connect the leaves from the previous step to make a blossom.

Cut a piece from the double-sided tape and place it like is shown in the picture below. Then stick another model. The second picture is more detailed....Connect the other pieces the same way.

Press the corners a little for more realistic effect (pictures 3 & 4).

Make another 11 blossoms like this one.

Step 4: Connect the Blossoms

Take 3 blossoms and stick them together. See the pictures below. Continue to add blossoms until they become 6. Now you should have haft of the ball ready. The same way make the other half.