From behind, it looks pretty nice. As you can see by the picture below, it meets up pretty well. The back is a "three piece" back plate, purely for the comfort consideration.
Here is the model, trying on the armour. There were several issues....we found that the armour was hanging a little low...about an inch. The breast plate was good, and fit well under the arms. But the faulds, even though they were perfectly period and correct for this armour, were just too long.
It is too bad actually, because the tassets were sitting just fine, but they did not "look right" from a distance.
Below, the thigh armour was again, just a little too high. I could not even fit him perfectly until I cut it away at the mark.
The shin pads are just fine. They will fit over the sabatons.
As you can see in the above picture, I am inordiately proud of those shin pads!