Ensure the spacing is correct. This should be visible from the side view, the front will more than likely look to be overlapping a little. Then take one from higher view to show the gap from above breast shelf level - pass that last pic to a Ruus'alor (or any app members floating in your thread... looks around suspiciously) and we can add the extra angles to your app as there's not any extra space on the actual form.
I've also got a slightly larger gap between my collar and chest plates than between my other plates that helps with the illusion from the front view.
That's funny you should say that, Kris, because that's what I've done.

The two pictures I showed ^^^ back up there, were the two submitted to local pre app (which passed) & regional pre app (where my app is currently). And my Ruus'alore / local app team members have been AWESOME about getting feedback to me.
Early feedback I'm getting is that one response was that they'd prefer another frontal shot, where the gap is more prominently displayed. And I think the only way to show it would be to physically alter the plates, e.g. take off 1/4-1/2" from the top, to widen the gap that way. If I moved them down, they'd cut into the top portion of the ab plate. Hmm... trimming them may be good to do anyway.
At this point, I'm just trying to get ahead of the curve, in case a new picture needs to be taken - however, if you're saying we could add the close up as an addendum to the app pic submissions... then maybe new photos don't have to be taken. ¯\_(ツ)_/¯
Thank you so much for your feedback!