First off, you should fix the group's name and find the bigger picture for the icon.
I think that maybe one of the rules should be that you have to join the 'Only for Teens' group before you participate.
Also are we going to do this in rounds? Maybe you add some different themes for round 1 and then the judges will vote on the best. Depending on how many people enter we can then only let the half with the highest score through.
Maybe the judges should use more than 3 points. I think the scoring sheet should be something like this:
5 points- uniqueness and creativity
4 points- Accurateness of the build, ie would it fit into that specific theme?
1 point- all rules followed Permalink