Being nervous is normal bec I felt that too when Im taking the exam but to be honest the exam is really easy specially for Pinoys I guess
The thing about the test questionnaires they do it a bit tricky so just be careful. You only need 18 correct answers out 24 Q's (I think I forgot now, sorry). So my advice to you like what I did (they're providing a pencil and paper) I put on the paper how many I am 100% sure correct anwers I have and how many I am not sure atleast you have an idea on your scores and don't be in a hurry you've got 45 minutes to spend there so if you're finish just read it again twice or thrice just to be sure. I reckon even you read it thrice it only takes you the most 20 minutes. Good luck again..yakang-yaka mo yan