Hey girl,
The main thing is that you learned from your mistakes. Whether you do or do not get the job, the next interview can only get better!
I had 4 interviews, 3 of which I did not get the job, but by the last go round, I was such a better artist!!! I still freelance for MAC, (it's been almost a year and a half) about 25-30 hours a week, and it's my only job. I look back, and had I got the job my first time or two, I wouldn't have been ready! MAC is an ongoing learning process, so anytime you can go in or steal a trick or two, Do it!!!
So, let time take it's course and if you don't succeed, TRY TRY AGAIN!!!
Good luck and if you ever need any advice, PM me!!!