I use porcelain as blank canvas, to see the true colour of the glaze. From porcelain I generally make small bowls thrown off the hump. A large piece of clay is placed on the wheel and only what is needed is centered at the top, thrown and measured using two crossed sticks to gauge the depth and width.
For finishing I turn the smallest one first lying a flat blade down on the turned piece I mark the next one how far down to turn down before starting the foot ring. So when they are cut from the hump I can be generous without finding it too difficult to turn the pots to the same height and shape.
When displaying my work, I find some vibrancy from glaze on porcelain can help lift the stand I’m displaying on.