Step 1:
The flower papers are pink with a yellow center.
Prefold in half four times
 

Step 6:
Sink fold over the prefolded lines

Step 5:
Prefold, then open the model, see the picture of the next step.

Step 2:
Fold the corners to the center and outwards again.

Step 4:
Fold over the prefolded lines, work in the direction of the arrows.

Step 3:
Prefold over these four lines.

Step 10:
Fold the edge downwards.

Step 8:
This is a petal with more paper layers, bookfold.

Step 9:
This is a thinner petal.
Fold it downwards

Step 7:
Press the model inwards

Step 16:
Make enough flowers for one Ivy

Step 15:
Fold the tip of each petal backwards

Step 12:
Squash-fold.

Step 11:
Repeat steps 9 and 10 on two more thinner petals.

Step 14:
Squash-fold the other three petals.

Step 13:
Squash-fold.

Step 21:
Make zig zag folds

Step 19:
Fold over these two lines

Step 20:
Fold in half.

Step 18:
Fold over these two lines

Step 17:
Prefold in half.

Step 22:
Open the model.

Step 25:
Twist and press inwards until the stem is thin enough

Step 26:
Glue or tape a few stems together into one long Ivy stem. And glue the flowers and leafs to the stem(s), see pictures as guidance.

Step 24:
The stems are made of large rectangular wrapping papers.
Fold in half a few times

Step 23:
Make enough leafs for one Ivy.