An entablature is the superstructure of moldings and bands which lies horizontally above columns, resting on their capitals. You can often find them in Roman and Greek architecture of the ancient times.

Having made a bunch of them in the past I know that they can be chalanging to acuratly represent as a 3D model. To save you from all the boring work, I made it for you, following an existing acurate tecnical reference from the internet.

This is a solid base for you to work upon. You can easly adjust this model to any building size and, as long you keep the proportions, you can trust that everything will be acurate on your house/temple too. To give you an idea, by simple selecting a corner and extrude it (mirroring it when needed), you can go from this base to a complete building entablature in less than 30 seconds: https://imgur.com/a/5NzoOvI

Best regards -Rogério-