Step 1:
Prefold in half over these four lines.

Step 6:
Now, crumple the model in your hands.  It doesn't really matter how you crumple it, just keep the side in this picture facing up.

Step 5:
Make a mountain-fold over these 4 lines.

Step 2:
Fold the corners to the center.

Step 4:
Make a valley-fold over these 4 lines.

Step 3:
Fold the corners outwards.

Step 10:
The upper arrow shows the piece at the arrow below  in the picture of step 9. The arrow below shows the piece at the upper arrow in the picture of step 9.

Step 8:
Unfold the model until it has the same shape as in step 6 again.

Step 9:
Pull the piece at the arrow above downwards, in the direction of this upper arrow. And pull the piece at the arrow below, upwards, in the direction of this arrow. Do this by making folds over these 2 sets of 3 lines.

Step 7:
Here I already crumpled the model a little. Crumple a little more now.

Step 16:
One flower is done...

Step 15:
Push or pull the outer edges downwards, see the arrows as examples.

Step 12:
Now the bottom of the flower looks like this.

Step 11:
Press the bottom of the flower firmly inwards from all angles and twist it in the direction of the arrow.

Step 14:
Fold some of the corners on the edges downwards by making a valley- or mountain-fold on these corners,  see the arrows as examples.

Step 13:
The edges on top of the flower are made of 2 layers on many places now. Pull these layers loose from each other, see the arrows as examples.

Step 17:
Here a flower is glued to the top of a stem.
Instructions for making the stems and leafs are in the video below.