AAAUGH! Just had a horrible thought-went back to the kilt, all neatly covered up with cloth on the living room floor and counted the pleats-I only put in 10! Not enough for 48" (10" over apron, plus 10 3" pleats only equals 40"). So I squeezed in 2 more pleats, but that puts the under apron at only 13" (at least I don't need seam allowance since the edge is selvedged). I'm not sure if this is going to be a problem when it comes to modesty? It should be ok, since it is still wider than the over apron. We'll see.

Hmmmm... 3" times 12 pleats plus 10 inches only equals 46" and I need 48", but I figure I can fudge on a few (or all) of the pleats by a bare fraction of an inch and come out OK.