CAD Drawing

Take existing DWG file and create new file for the purpose of creating "Fireplace Surround" out of cast limestone, and to show the removal of the existing 2 1/4" firebrick to make room for the new custom fabricated clay tiles. The DWG file that is attached below shows my dimensions for a "mock up" out of plywood. I would like to now show the final cast limestone surround with dimensions, as well as the construction drawings for the new clay tiles in the herringbone pattern shown in the attached photo. The picture shown in the attached PDF is existing, the attached jpeg is how we are proposing it to be. In model space of the attached DWG, I am showing a line drawing of the Proposed fireplace surround that I traced over the scaled PDF insert. Feel free to cleanup if necessary. The final work product should be elevations of the fireplace, and a detail of the fireplace surround so that the stone center can fabricate the surround.
PLease let me knwo your thoughts.

Thanks,

Jay