How Did Bart Kamp Create The Lovelady Image?

[Royell Storing]

Royell steered me to a Couch clip which is the best quality I've come across:



I cropped and blew up the two men:



There is a hint of something on the shirt in this image that may be a pattern but I wouldn't have an idea how to get it to stand out.
Maybe someone who knows what they're doing can have a go.

                                               - PHYSICALLY IMPOSSIBLE -

  (1) :20 Seconds after the kill shot, Lovelady and Shelley are in the position of these 2 Guys?

  (2) :20 Seconds after the kill shot, DPD Officer Smith, (left of center), is well down the Elm St Extension?