It doesn't matter. The test results of subject 2 are directly uploaded to the vehicle management office system, and the signature is only for your own confirmation. The staff who manages the driving test files will call you to change it, and if you are afraid of trouble, the staff will help you change your signature. Don't worry, it doesn't make any difference, just an extra horizontal line. The problem is not big. Think of it as a scrawl. There is no need to worry too much.