I had mine done over 30 years ago, then again three years ago. I was assessed as a winter. Since then they have brought in the sub divisions and I am now a jewel winter. I took my old colour swatch with me for the second assessment, but didn't discuss the colours or even which season I was told I was until after I was told that I was a jewel winter.
Very little had changed, except that the ice hyacinth that I was told was my colour the first time round yet never did anything for me is really not my colour, and that emerald green is one of my hero colours.
I find it easy when shopping to walk paste swathes of clothes that I know won't suit me, and find clothes shopping at this time of year a PITA because autumn colours really don't suit me.
I follow the local HOC representative on SM, and as she is a jewel winter as well I can see what looks good and how to style myself. Her clothes might be considered garish by some, but they really do suit her.
The one thing I have taken away from my more recent session is if you have pierced ears never leave the house without earrrings in, and always wear lipstick. I do both. I have pale lips, and lipstick really does brighten my face.
Another thing I was told was that if you are wearing the right colours people just think you look well and shouldn't specifically notice what you are wearing - you should be wearing the clothes, they shouldn't be wearing you.