Step 1:
I layed a yellow rectangle (two squares) on a silver colored rectangle and folded the witch wand out of it.

Step 6:
Fold over these four lines, use the prefolded lines as guidance. Turn the model afterwards.

Step 5:
Fold over this line, use the prefolded lines as guidance.

Step 2:
Fold in half.

Step 4:
Prefold in half, then fold the left part in half three times. Unfold afterwards.

Step 3:
Prefold in half, then prefold both edges to this prefolded centerline.

Step 10:
I opened the folding lines of the previous step here.
Fold the edge upwards on both corners.

Step 8:
Press flat, see purple arrows.

Step 9:
Fold over these two lines.

Step 7:
Fold over these two prefolded lines.

Step 12:
Glue the right edge on the left edge, see arrow.

Step 11:
Fold over the two long prefolded lines on the right, they go further outside the picture.
Fold the left part into a pyramid shaped tube.

Step 14:
Fold over these two lines and glue the right edge on the left edge, see purple arrow.

Step 13:
Fold the right part of the model flat again.