I cutout the shape using 1/4” oak veneer. The height clearance seems adequate to fit over the baby and overall, I like the shape. The 1/4” veneer may be too thin to use as a routing template (it’s closer to 0.2”), so I may have to make a second template with 1/2” MDF or something a little thicker so the flush trim bit has a better surface to ride.
-- Beat it to fit. Paint it to match.