No, that's wrong -- here's why.
Willis #5 (not shown by you, but reproduced below) shows the knoll directly opposite Kennedy from Willis' position. The arrow in the photo points to JFK. The red circle in the image shows the area typically named as the location of the purported grassy knoll shooter. It is left of center of the image, and left of JFK.
It is forward of Willis, not to his right. He has already turned to face the knoll.
You write: "If he turns to face the knoll, then the TSBD is to his right."
Well, yes, but that's exactly what his testimony says. Your challenge was to establish the knoll was to his right, not the TSBD. You did after all claim that to be true. Now you are claiming that he is facing the knoll. So that puts the knoll in front of him, not to his right.
The knoll is in front of Willis in the photo you cite - It is directly in the view of view of the camera lens and clearly that's the way Willis was looking at the time of the shooting. You won't be able to establish the knoll was to Willis' right anytime during the shooting. And you ignore entirely my point from earlier, that if the prosecution wanted to get Willis' opinion about whether a shot or shots emanated from the knoll during the Clay Shaw trial, they merely had to ask him that question. The fact that they avoided asking it tells you (or it should tell you) all you need to know: They didn't ask because they didn't want the jury to hear what Willis would say, as it undermined their point.
[qimg]http://mcadams.posc.mu.edu/hunt/willis7.jpg[/qimg]