Cool segmented design.
Tyrian's the Mando to ask exactly how he did the snaps, I'll be taking his advice.
From what I remember from the advice he gave me at the armor party, he glued one half of the snap to a piece of plastic then glued that to the underside of the armor. Then using chalk ect. on that snap placed the plate where he wanted it leaving the exact placement for the other half of the snap.