Recreating window treatments from a photograph is sometimes part of the workroom's job. Sometimes we have design input, but sometimes we are required to simply make what is ordered.
I was asked to duplicate a swag with a flat, straight bottom, that was seen in a magazine. After much experimenting, I developed this mock-up. I based the swag specs on that bottommost fold, using Ann Johnson's swag book. I pretended that was the swag silhouette, and then left a lot of excess fabric, which I cut away to get the shape I sought.
Postscript *** Here's the "duh" moment: Now I am realizing that I basically was creating a variation of an Empire valance. Those straight sides are where horns would be sewn to an Empire.***
The real fabric is a plaid, however, and I didn't want the bottom edge to be cut off-pattern, so on this one point I compromised and cut it straight on the bottom, which meant the sides raised up a little higher than wished, but I didn't think the alternative would've been attractive at all. Here it is before pleating..... strange, huh!
Postscript *** and now that I've had my "duh" moment, I see that it's just a very big Empire swag, with separate jabots instead of attached horns! ***
Postscript *** Well, if I had recognized this treatment as a wide Empire, I still would have had to draft a pattern from scratch, but it might have been easier if I had visualized this pattern shape in the first place. ***