I was 15 when I won BBCC 68 last summer, if that has any significance. Anyway, I disagree with age brackets. More than anything, I think it would patronize younger children by making them think they couldn't match up to adults. Children are not inherently worse than adults at MOCing, and excellent quality does not need years of experience. It is quite possible to go from very poor to excellent in MOCing within the span of one to two years, regardless of one's age.