Austin started strong, and I feel has remained there.
Jodie has probably improved the most; her first week was pretty awkward, and I don't think the judges expected her to stay in for long, but they didn't reckon on her fighting spirit.
Lisa showed potential in week one, but let her nerves get the better of her. Now she is learning to cope with the nerves, and to appear confident (even though she may not always feel it!) has also showed great improvement.
Andrew, Tom, Christine and Rachel have all stayed about the same. No great improvement.
John did a nice first dance - waltz - and that was it. (Plonking around the floor doesn't count as dancing.... sorry, 'cos like everyone else, I think he is lovely!!)
Heather - did good first dance, and has gone downhill ever since.
Cherie - started really well, but other than the rumba which can be danced elegantly, she can't seem to cope with the Latin.