Step 1:
The flower paper is about 15x15 centimeters and has a (self drawn) yellow center on one side.
Fold in half

Step 6:
Fold both edges together, see arrow.

Step 5:
Fold along the edge.

Step 2:
Fold in half, unfold the model.
Then repeat both steps in the other direction.

Step 4:
Fold both spots together, see arrow. Use the prefolded lines as guidance.

Step 3:
Fold in half.

Step 10:
Fold over the prefolded lines, start with the two lines at the bottom right.

Step 8:
Prefold. then unfold the model.

Step 9:
Fold over the prefolded lines

Step 7:
Fold in half

Step 16:
Squash-fold this flap.

Step 15:
Fold both flaps sidewards

Step 12:
Fold the tip upwards over the purple line.

Step 11:
Prefold.

Step 14:
Fold the remaining edge inwards (Valley-fold over the layer on the backside).

Step 13:
Press flat and repeat steps 11 to 13 on the backside

Step 21:
Fold the yellow center in half.

Step 19:
Fold over these 6 lines.

Step 20:
Fold over these 5 lines and bend/curve the leafs.

Step 18:
This is the front of the model again.
Fold over the four purple lines.

Step 17:
This is the other side of the model, squash-fold both flaps.

Step 22:
One flower is done....

Step 28:
Done....

Step 25:
Make enough of these flowers with stem for one full arrangement.

Step 26:
Fold a long rectangle paper around a florist- / metal wire, this will be the main stem.

Step 24:
Fold the tip of the stem downwards and glue the backside of the flower to it.

Step 23:
This paper is about 7x7 centimeters.
Fold in half 3 to 4 times

Step 29:
The leaf papers are about 15x15 centimeters.
Prefold in half, then fold over the two outer lines.

Step 27:
Glue 5 to 10 flowers with tiny stem to the main stem

Step 30:
Fold over these two lines.

Step 31:
Fold over these two lines.

Step 32:
Curve the leaf and fold over the purple line

Step 33:
Make enough leafs for one full arrangement.

Step 35:
Done.....

Step 34:
Glue the single leafs together.

Step 36:
Fold a long rectangle paper in half over the length a few times.

Step 37:
Twist / curve the model

Step 38:
One root is done.
Make roots of various length

Step 39:
Glue the single roots together.

Step 40:
Done....

Step 41:
Glue all three parts together.
I made two of these long stems with white flowers.