Well done,
Now I am sure that your riding was again good, and without the u-turn you would have passed the test
Therefore, keep practising the u-turn, and I mean keep practising, until you are sick of them, and confident that they become natural.
I am sure if you wish, there are many volunteers on the forum that would be more than happy to meet up, and assist with you where posiible.
Is that correct guy's and gal's?