I drew Tokyo Tower a few years ago.
On my first attempt, I tried to paint it with Photoshop. But I gave up.
Eventually I had no choice but to turn on the 3ds max.
I use 3ds max at work, but I don't prefer it when I draw diagrams.
This is because drawing only with Photoshop is much faster and more intuitive.
The 3d program takes a long time and requires higher accuracy.
My method of choice is to create a frame with 3ds max, and then use Photoshop to sketch this out and draw.
http://drive.google.com/uc?export=vi...U45eZE3rKkgg2f
In a similar way, I recently drew Karlatornet of Sweden and Vakif Bank of Turkiye.
Karlatornet and Vakif Bank are much simpler than when you drew Tokyo Tower, completed almost everything in the 3ds max, then moved to the Unity engine to roughly capture the camera angle and light angle, took the image, brought it to Photoshop, and post-processed it.
http://drive.google.com/uc?export=vi...fObDJSzOxBVvJt
In the foundation form that started with a box, increase the mesh and twist the ends. Make the same four pieces to make a building.
http://drive.google.com/uc?export=vi...Xwmj88O0EnDODF
Likewise, starting from a hexagonal cylinder, it creates an outer diamond structure and twists the whole thing like a twist.
I prefer to finish it from beginning to end with Photoshop
Sometimes, only buildings with complex shapes or geometric shapes are made in 3D.
CAD or sketchup are not close to me, so I enjoy using 3ds max.
of course, in the eyes of professionals, my 3D work is simple.