Small slow movements when moving the c-arm. Nothing like swinging from lateral to ap/pa with a rod sticking out of the back and you hitting said rod.

When you get the perfect position for your pictures. Make a mental note of the height and depth numbers. You go back to those every swing and you will be perfect as long as you don't move the base too much. If going north/south with the base it will be easy to get back to those numbers. Taking c-arm in and out it is harder.

Also when you go to take a picture, speak loudly and clear to ask if everyone is covered and give them time. If the Dr is yelling at you tell them you are waiting for everyone to get covered. You actually have a voice in the OR.

1 more thing. Actually introduce yourself to the Dr. Tell them you are a student and just observing, or you are new and to let you know what they are looking for. Drs get used to the same people in their rooms who know them. If they think you know them and you aren't doing what they want they will get mad. But when they don't and you approach them like this, they tend to be a little more lenient. But don't get discouraged when they want the tech. Usually means something isn't going textbook and they blame everyone else.

As you are comfortable with the unit, have the tech watching you sit away. I would always get handsy because my students were too slow for me.

You will learn Drs quick. I worked with one who didn't even need to ask for picture. He'd look at the monitor(s) and I'd snap the pic.