I usually put "true 1/64" figures in the foreground of my layout with "larger 1/64" vehicles like those from M2 Machines, and use 1:72 figures near "average 1/64" vehicles like those from Johnny Lightning that are placed in the midground, and 1:76 figures near smaller (bigger than 1/87 but smaller than 1/72) vehicles like some of those from Matchbox in the background.
I do the same thing with telephone poles, making them modestly taller in the foreground and progressively smaller as they recede toward the background.
This kind of forcing the perspective works modestly well if the layout is at waist level but looks really good if the layout is at eye level.
LittleTommy
