When the parts stiffen up enough to handle, you flip the top over (score the top rim and add slip) and place it on the rim just scored (left). I go ahead and trim the excess around the form and clean it up. The lid is taken and concaved to match the shape of the raised top and add the handle (right). I had to do a little bit of cutting away on the lip, so it would set tightly into the opening of the form.
I found this to be as easy as I could make it.
I really enjoy this method for construction. It took me about an hour (not counting drying time) to produce each form (photo to the right). Have fun and make them good pots.