I do understand about having others in the room while you, your clinical instructor and the patient are all there. Certainly doesn't help the nervous factor.
Ya Know, unfortunately that is what learning is all about. Having someone breathing down your neck, you feeling uncomfortable and as each minute ticks by you may feel less and less confident in yourself and your fledgling skills as a health care provider.
I never went to a LPN program, I went into a Nursing Diploma program but I would guess the stressors are the same, especially when you are dealing with living, breathing humans who happen to be ill and assuming the patient role.
I wasn't there with you, and it sure sounds like the Instructor should have taken a deep breath him or herself before grabbing the stuff out of your hand.
My advice: bite your tongue, take her advice and hang out in the clinical lab and practice your aseptic techniques. Practice inserting an indwelling catheter until you can do it with one eye closed. Know why you have to do things this way and "not that". I had a med-surg instructor tell me (in front of the whole class) that I made her BUN raise....Needless to say I wanted to jump into the nearest hole and stay there. (what happened was.....and please DON'T LAUGH OUT LOUD....my instructor told me to "flush the IV line" so what did bright light little ol' first year student nurse do? I took the IV line, went over to the sink in the patient's room and tried to flush the IV line by running the tap water into the little itty bitty lumen of the IV tubing. I happened to look over at my instructor and her mouth was literally hanging open. Sigh. You can bet I never repeated that again, hahaha. But the bottom line is.... I learned if I wasn't sure about something, to ask.)
You are not an idiot, or else you wouldn't have been accepted into the program nor would you have continued on. You are a student.
Oh and lpnhell, if you need more incredible silly student nurse mistakes, PM me and I would be oh so happy to tell you about a million more that I made or did or attempted to do.
PS: at graduation from my Nursing School
I won two honors: Ideal Student Nurse and Excellence in Clinical (Bedside) Nursing. The latter was given to me by the Instructors in the school. And I became (post graduation) fast friends with the "BUN" Professor.