OK GUYS, I've heard the cries of disappointment. I suggest that whenever you get stuck in this Instructable, check out the link to the video I posted on the very last step. The video goes very fast, so use this Instructable as a broken-down guide to what is going on in the video. This would probably help a lot for those of you who said the pictures weren't very clear. Hope this helps!
Step 1: Start with an 8*8 grid
Step 2: Corners and more creases
Now, take one corner, and bring it along the diagonal to the opposing corner. Make crease. Open up.
Repeat for the other three sides. New creases are shown below.
Step 3: Triangles and MORE creases
Fold small triangles as shown in the pictures (I can't explain this very well)
Do this for all four corners.
After this, turn the paper over.
Bring corner up until the edge meets the line. Make crease until it is almost at the center of the corner (as shown)
Step 4: Last crease: square in the center
Step 5: The diamond method
First, fold the square in half following its diagonal. Pinch the two sides together, and flatten the paper out, making sure the flap thing is facing toward the left side.
Open up the square and bring the flap up.
Unfold the origami, and you'll have that little swirl in the middle.
I've seen two other methods of doing this before, but I still like the diamond method the best. However, if this method doesn't suit you, try this method instead: http://bloom4ever.com/howto/howto06.php
Step 6: Trapezoids?
First, turn the origami around so you can't see the square in the center.
Then, if you pull back one of the flaps, you'll see a crease going from a corner down. You will have to pop up this crease. The images may be sort of helpful for this.
Simply put a finger beneath the paper, right under the crease, and push upwards.
Reinforce the marked creases so the figure looks more 3D.
Do this to all four corners.
Step 7: Collapse the triangles
Bring it to the left, and press it against the layer under it.
Once you did that, open the triangle back up.
Bring the side of the adjacent trapezoid thing over, and cover the left half of the triangle.
Fold the excess paper back so it keeps the "leg" that we created together.
Do it to all four sides (the last side is more challenging than the others, but the method is basically the same. However, if any "leg" becomes loose or opens up, you'll have to fix them. Clipping them temporarily together with something like a paper clip or small peg could be a solution, but...O0O CHEATERS!)
Step 8: Closing the bottom
Step 9: Open up the bud
Stick your finger / back of a pen / tooth pick inside and gently pull the petals outward. Smooth it out.
Step 10: Curl the petals
Now, look below the four main petals. You'll find smaller flaps. These were the other half of the triangles. Curl them also.
Step 11: Finished
Hope you enjoyed it. Thanks for reading.