For the upper teeth picture, tilt the head back as far as you can and open up as wide as you can in order to see all of the teeth, even the back ones. You may need to use the spoons or your fingers to pull your lip up and out of the way.
For the lower teeth picture, tilt your head down and open as wide as you can in order to see all of the teeth, even the back ones. You may need to use the spoons or your fingers to pull your lip down and out of the way.
These pictures are tough, but they help us to see how many teeth you have in your mouth and any rotations or misalignment.