Skinning Drophead doors

[nogera@juno.com (robert c noguiera)]

Hey folks 
Has anyone out there ever skinned a Drophead Coupe Door? I've got the
wood work just about done and looking at the door skin it would appear to
curve both top to bottom and front to back. The curve front to back is
not very great but there. Is it English Wheeling time or once I pull the
skin over the frame will the skin assume the crown naturally?
Thanks 
Bob Nogueira