Hi,
I have above 14 years of experience in CAD drafting of scan documents. I always maintain perfect dimension and proper layering for each and every drawing. I manually draw the walls, door, windows, plumbing, fixtures, furniture etc. Also maintain layering for dimension and text differently.
Also maintain proper scaling of the pdf and draw 1:1 scale.
I have my sample work, if you need I can send you those. Also if you need I can do some part of your drawing to show you the output.
I look forward your response.
Thanks
Cadence