The contractor, Grandwork, has Shop Drawings showing the depth of the art wall panels with the low bed wall. Please work with them on the framing of the panels and how to coordinate the panels with the low bed wall and the installation incase they need to provide any backing in the wall.
Grandwork and you will need to size of the panels based on existing site conditions. Therefore, it would best to have the mural outline drawn on the wall and floor showing how the panels coordinate with the low bed wall. This will help size the panels. Once drawn, photograph for my review.
Please advise how you will coordinate with Grandwork.