Export to DXF help

Need help? We are here.
1

Hello guys

I need help with export to DXF. I did 3D model for my friend and I don’t know what is proper way to export to dxf. Can anybody help me? I have no experience with dxf. Specially with part I painted red

image
image2224×1668 643 KB
https://gofile.io/d/Xp1CGb

2

Is it correct, or I should do something different?

image
image2224×1668 362 KB