It can take awhile to fold all the units for this little guy but I think the end product is worth it.
Step 1: Materials
-5 sheets of green origami paper
-5 sheets of red origami paper
-5 sheets of gold origami paper
-something to hang the ornament with such as some string, a paperclip, or an ornament hook
I used smaller origami paper that was about 3"x3" and it made a model about the size of a bulb Christmas ornament.
Step 2: The Paper
It can be a little tedious but when you get something that looks like the last photo then meet me at the next step.
Step 3: Folding the Unit
Fold the strip in half. Now fold the open end of the flap to meet to folded end as shown in the second picture. Repeat on the reverse side, as picture 3 shows.
NOTE: To make the colored side (red) show, the units should be folded the same way as the pictures.
Step 4: Folding the Unit Cont.
Flip the paper over and make the same two folds on this side. Fold down the upper right corner again so that the corner points to the crease line. Fold this over to meet the edge.
Make 29 more units (this could take awhile).
Step 6: Start Connecting Em
-open the middle slit on a gold unit and insert a green one
-insert a red one into the green one
-insert another gold one into the red one
-insert another green one into the gold one
-connect the flap of the first gold one into the green one you just added so that all 5 units are connected as shown in the last picture
This may sound a little complicated but if you look at the units you can tell how they are supposed to be connected and it's really not that complicated.
Put a thread, paperclip, or ornament hook through the model if you want to hang it and admire you're beautiful icosahedron.