First of all, you have to be clear. Eight characters do not mean that you need to make up any five lines if you are missing any five lines. That was not the case. Sometimes what you lack is not what you need to make up. If you appear, this unnecessary complement of five elements is a disaster.
I didn't see your date of birth, so I can't give you an accurate answer. Because the master doesn't know whether your constellation is Aoki or the five elements need wood.