Step 1:
Glue a square paper to a piece of fabric, the paper makes the folding easier. Cut the fabric along the square.

Step 8:
Fold the flap around the edge

Step 6:
Fold the corner to the spot indicated by the arrow.

Step 13:
The arrow on the left and right show the places where the edges are taped / glued together.
Fold over the pink line and slide the clip behind the edge, see arrow in the center.

Step 12:
Glue the edges together

Step 11:
Fold over the prefolded lines.

Step 10:
Fold / press both edges inwards, then open the model, see large arrow.

Step 9:
Fold the edge downwards again and prefold over the same line on the layer at the backside.

Step 5:
Fold over this line.

Step 7:
Pull the edge upwards.

Step 3:
Fold both edges a little off the centerline.

Step 2:
Prefold in half.

Step 4:
Fold both edges to the centerline.

Picture from top to bottom:
Barbie doll with Origami dress, studded shoulder bag and a fabric Origami purse.

DONE!

This is a DIY video for making the Origami purse: