Shadowing after interview. Always awkward for me!

hi! i've been reading this site for a long time. all of your discussions helped me through nursing school and now i have a question.

i got my rn license two weeks ago. so far i have had two interviews at one hospital and both ended with a shadowing experience. in both instances, i did not get the job. i got a call from the recruiter saying that, in order to get more interviews, i must now reapply when new graduate openings are posted because they are now interviewing "more qualified candidates." (she also mentioned having feedback from my last interview. unfortunately, this was in voicemail so i didn't have a chance to ask what the feedback was.) i clearly did something wrong near the end of the interview process, which involved about 8 hours total of questions and answers with this hospital thus far.

i have a feeling that i'm too shy during the shadow. i feel like i blew it both times. clearly, there is nothing wrong with my resume or any other "qualification" based metrics. phone interviews always go incredibly well! it's me in person that they don't like!

i now have two more interviews at another large hospital coming up and i don't want to ruin those ones, as well. if you were hired after a shadow, what did you do? what is expected during the shadowing experience? i typically try to be open and friendly. it's hard to "loosen up," though.