Hi Blackbyrd!
Sorry to hear you didn't get the job. From talking to others, it seems that competition for posts is quite fierce at present which is not helpful in itself.
I've received mixed feedback from my interviews including 'we really liked you and can't fault you at all but we chose someone with more experience'. But I've also received some constructive feedback and, as annoying and disappointing as hearing the feedback was for me, at least I got to know why I wasn't chosen and I can act on it for next time! So perhaps you could do the same?
I've had a few interviews over the past several months and I'm still unemployed so not sure I'm the best advisor on this :$ but don't give up!! You CAN do it! Plus I've been told that practice makes perfect;-)