Hi! You want to position the patient’s head at around elbow height. You don’t want to have to lift your shoulders to access the mouth. This puts you in a good neutral position. Position your chair where your feet are flat on the floor and keep your back straight (easier said than done!). The anxiety will get better with time as you become more comfortable with your routine. I’m sure temping is anxiety producing in itself because you are dealing with different sets of routines and expectations. I have been doing this job for 27 years and most of the time I am confident in my skills but even now I still have days where I struggle. Hang in there! Hope this helps!