Ok..now the next step...
Open a new image  500 x 500, transparent background.

Go to selections...Load from Alpha Channel..and load
the selection you saved earlier.

Using your flood fill..fill with a pattern of your choice.
This is going to be your background drapes.

I used this pattern... 
 

Add a new layer....go to the shadow image you made earlier and copy it
and paste it onto your new layer .

Now it should look like this.

Now go to the other drapes you made and use the
rectangle selection to select a square area in them.

Like this

Go to image...deformations..circle.

Now hit Ctrl C then Ctrl V to copy it and paste it as new image.

Now..on the new image go to sharpen and sharpen once.

Now..with your selection tool set to ellipse..start at the center of your circle
and select an area ..going out about three of the creases and all
the way to the top and bottom..
Like this

Now..hit Ctrl C to copy it..go to your other drapes image..
add a new layer and name it "Middle"
then hit Ctrl E to paste it onto it.

Place it toward the top left corner..like this

 

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