I am a Dental Assistant student, and right now we are practicing, X-rays. I was wondering what would be the secret to get those x-rays everytime withouth doing it more than twice, like, sometimes i get confuse with what "accesory" I should place the x ray sensor in. they have xcp, bite wings, different 'accesories" to plac the sensor in different way, but it quite hard sometimes to keep it in place.i need to learn how to take dental x-rays quick! i have a hard time lining up the PID with the sensor. is there any technique or something that could help?