3. STEP 1
Fold your coloured
piece of paper so part
is a triangle and the
other side is a
rectangle by folding
the bottom corner in
the middle to the side.
4. STEP 2
Carefully cut the the
rectangle off so you
are left with with the
triangle.
5. STEP 3
Now unfold the triangle
and you will find that it
is a diamond.
6. STEP 4
Fold your diamond
into a perfect
rectangle.