Step 7A Step Backwards.
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And now, much to your dismay, we will be undoing our hard work. But fear not! It shall bloom soon. Once you have all your creases undone, take the bottom point (the open end), and fold it out. It should sort of.. pop out. This is probably the most difficult step, so don't hesitate to look at the pictures a few times and ponder over it. Make some symmetry! Do it on both sides.
Finally, fold the two sides into the center, and crease them down. They should already be creased from your previous creasing, so this step should be easy.