I don't see how repetitiveness is taken into account in a event that is judged month by month with only one submission from each person. If that is the case there needs to be a serious change in judges.

People have different styles, so obviously their head textures are going to resemble the ones they have done before, that should not give them any less chance of winning or losing.
Judging should be done how it is said to be, if there is going to be any form of bias then the even should not continue or have even been started