Drawing a paper made carry bag

Create a shape as shown using pen tool.

Double click the layer to open layer style window. Apply settings as shown.

Create another shape as shown using pen tool. This will define depth of the bag.

Create shape as shown using pen tool. This will show the inner part of the carry bag. Fill it with white color.

Select the front shape layer of the carry bag.

Enable subtract from shape area from the top bar. Select elliptical shape tool and create two ellipses to create holes for the handle.

Create a handle using pen tool. Apply same layer style se used for the first shape.

Duplicate the layer. Press Ctrl+T and scale down a bit. Move this layer behind all the layers in layer order in layer palette.

Ctrl+Click the layer to get the selection.

Create a new layer and apply the gradient as shown in the image below.

Change the layer mode to "Soft Light" for this layer.

Reduce the opacity to 30% for this layer. This will create an illusion of wrinkles in paper bag.

Let's add the final touch by adding perspective shadow.