Failed Skill Test!!! Need advice

Hey i had the same problem you did! I would do them on the yard at school and the first time i took the test i failed on parallel! I was crushed bc i wasnt even worried about parallel bc i nailed it most times! It was the cross overs(offset backing) that was giving me fits at the yard and i failed the thing i wasnt scared of failing! I had my trailer inside the box but thought i was out of bounds so instead of completing my manuver i did the worse thing ever...i pulled out and tried to get my set up again. Couldnt get straightened back out. If i had put my tractor in i would have passed
Went back the second time and got blind side parallel which i was better at oddly! This time i messed up with my set up and i couldnt get my tractor inside the box couldnt see the cones in the front of me! I was ready to give up and go home! The day bf my third time i spent 10 hrs practing and third time was the charm! I knew all the steps and u knew what to look for i just let my nerves screw me up!

 

Is there any reason why those stumps calling themselves trainers can't actually perform their duties and give you more hands on training?