So if understand you in the right way, you have rebuild your old door-panels (front) instead of to buy them new.
I have buyed 'normal' new door panels. The door panels that you have are not more on stock by BMW . This was the only option to make them by myself.
But my door panels look like this ( previous OEM door panels)
No sutures in the lower section . And only leather in the middle... Buy hey they looks good the new one.
I have asked BMW how they are made , but no one knows a answer ... Then i made it like the previous door panels but then in full leather and the right leather.
And i think yours is individual ...