Insert Objects into DXF

I already have the base DXF drawn and simply need additional shapes placed into it. The task is limited to adding new objects only— no deletions or edits to what is there now.

Here is the workflow I have in mind:
• I send you the current DXF along with a marked-up reference showing the exact position, size, and layer for each object to be inserted.
• You add those shapes, keep layer naming consistent, and maintain the file’s existing units and scaling.
• When you return the updated DXF, include a quick-view PDF so I can confirm everything visually before we close the job.

I’m using standard AutoCAD 2020 but any CAD software that exports a clean, compatible DXF is fine. Accuracy to the reference sketch is the only acceptance criterion. Turnaround within a day or two would be ideal; just let me know if you need more time once you see the reference.