Step 1:
I used three different papers for the flowers.
Prefold in half over the four lines.

Step 6:
Fold the flap upwards.
Then repeat steps 3 to 6 on the other side.

Step 5:
Press the edges downwards

Step 2:
Fold over the two lines at the top left, mountain-fold over the two diagonal lines and valley-fold over the two lines at the bottom right.

Step 4:
Fold the tip downwards over this line.

Step 3:
Prefold over these two lines.

Step 10:
Fold the four inner corners outwards

Step 8:
Fold the four petals sidewards

Step 9:
Open the four petals with your fingers, see arrows as example.

Step 7:
Make this fold on all four flaps.

Step 16:
Done......

Step 15:
Curve the leaf

Step 12:
Make enough flowers for one full bouquet.

Step 11:
Done....

Step 14:
Fold over these two lines.

Step 13:
Prefold the leaf paper in half, then fold over the two outer lines.

Step 18:
The stems are glued to the backside of the flowers.

Step 17:
The stems are made of large rectangles folded in half a few times.