It's perfectly understandable and my little thing is no exception. However: Since I have been working in a museum as a guide for about a year and a half, I have been a little confused about performing in front of people. The word "a little" is perfectly appropriate, because for an introvert like me, appearing in front of any set of people called the audience will always be a more or less energy-sucking affair.
However: Since I have been working in a museum as a guide for about a year and a half, I have been a little confused about performing in front of people.