Question:

How do I put a Duvet Cover on a Duvet?

Answer:

The easiest way is to lay the Duvet on a bed with the cover turned inside out.  The bottom seam should be facing the bottom of the Duvet.  Put your arms inside the cover and grasp the bottom corners of the Duvet Cover and the bottom corners of the Duvet.  Raise the Duvet off the bed and allow the cover to fall around the Duvet.  Shake the cover in place over the Duvet.  Secure the top.