Draw in 3d app

The Draw in 3d app (by Steffan Poulsen) is really great.

Link: appsto.re/us/lJCX2.i

There is a built-in Tutorial. The app is quite intuitive.

I have made a (PDF) slideshow (<<click) of screen shots of the tutorial for reference.

One early drawing is shown. Much, much more can be done.