Ah yes, the job interview. If there was ever a time we need to perform, that's it!
When do you practice for job interviews? Do you practice AT the job interview, or do you acquire those skills BEFORE you need them? Would you get in a car for the first time and go for your license test? Would you offer to sing the national anthem at the Superbowl without training and practice? Of course not, so practice for job interviews BEFORE they happen. Practice in a place where the results do not matter.
Practice at Toastmasters. Watch this video for five great tips for job interviews: