First I made a template of the center.
Drew out the cut lines. :)
Now to make the first cut.
So, far so good. It is important here to make sure that you take your time and do not try to rush the cutting.
Now after the first piece is cut I test fit it to the door.
It is looking pretty good.
Now, cut the second section out.
At last, the final cut.
Now I test fit both pieces.
I think this is going to look nice.