This Job is one of my company designer design it, he give the 3D DXF to me and I change it to 2D in CAD as a Technical Drawing. After I finish the technical drawing, I use the 2D plan and sections to create a on Scale 3D again. Just use the Photoshop to make some effect on it. Ai also is one of my best skill, so illustration is my other helpful for you.
I was a CAD Draftsman(CAD R12) between 1997-2000 in a Security system company, follow some building projects. Leave Draftsman when the Building Ice Age in Hong Kong, then study Design(Photoshop, AI, Flash) to change my career. In 2000, I became a Designer. During SARS(2003), the Economic is the worst, my friend invite me to work in HKUST as a Research Assistant in Environmental [login to view URL] I am working in Environmental Projects, I still doing design jobs. I jump back to CAD Draftsman in 2011and Learn AutoCAD 2011 in Welkin Computer Training. 3D skill is train well, and also I work in a Exhbition Company. Although working on symbol copy and rotation when there is a Large Exhibition, but sometimes I still need to change some 3D designs(3D MAX) to 2D technical drawings(CAD on Scale drawing) for special booths. Then when I am free, I would like to use my 2D technical drawings change back to 3D Model in CAD. So I train myself as a 3D(not on Scale) -> 2D(on Scale) -> 3D(on Scale), because I want to get rich for my profile, and to be a helpful Freelancer.