Carving across a cupboard door is a decision that has to be reconciled with the door being a door.
Deep relief needs thickness, and thickness on a hinged panel means weight - and weight on a hinge means a door that eventually drops and catches on its neighbour. So the doors here are not carved from one thick slab. They are made as a framed panel: a stout frame that carries the hinges and holds the shape, with the carved field worked in a separate panel let into it.
That separation does two things. The heavy carved work is carried by the frame rather than hanging off the hinge screws, and the panel is free to move very slightly within its groove as the seasons change, instead of forcing the door out of square.
Because the foliage sweeps across the door and off its edge, the carving is set out on both doors together while they lie side by side on the bench, so the pattern reads as one composition across the pair rather than as two panels that happen to match.