360 Pano illustration done using Photoshops 3d tools.
Not as simple as drawing on a regular 2D canvas but with a few work arounds you can do it.
There are a few good tutorials on youtube and art station.
Also Jama Jurabaev has a paid tutorial on Gumroad where he introduces the concepts and supplies a very clever and handy perspective grid.
Well worth checking out if you are interested.