So, I decided to use Paint 3D to make a simple object (my head). This was accomplished using 6 cylinders and a torus blended into a sphere; and then painting the whole thing appropreately.

This excersise was among the most painful 3D modeling I have ever done in my entire life. I have previous moddeling experiance in Autodesk Inventor®, AutoCAD®, and SOLIDWORKS™. Because of this, when I first loaded up Paint 3D, I had a set of expectations from it. None of them were met even in the slightest.

Among the first things I noticed was that if you tried to rotate the camera, it would snap back into position as soon as you selected a tool; effectively meaning that you can only work from one angle. You also cannot cut parts of a geometric shape (I previously tried to make Harry's "headphones" using cones, but I found that I couldn't remove the point from them, so I had to use cylinders instead). There is a tool that you can use to make custom shapes, but you can only directly adjust 2 dimentions, with the depth just being a predefined thickness.

Once the actual head model was finished, colouring began. There was fortunately a fill tool, allowing me to colour most of it white without having to brush the whole head (which would have been impossible due to the aforementioned inability to rotate the camera). When it came to colouring in the filters, I was very annoyed to notice the lack of a way to confine the colours to a single face, resulting in the colour spilling onto other parts of the model, this had to be manually corrected with very careful brush usage.

Basically, in short: This was the first, and will be the last time I ever use Paint 3D.