I've pretty much always used worksheets, and I
love them. It's such an excellent way to monitor progress. I'd started using them before working out to DVDs (when going to the gym) so it was kind of a natural to want to do it once I started doing them. But I'd always just kinda jotted it down and made up my own worksheets, so I was extremely excited when I first found all those worksheets (pre-made!) for the DVDs. Especially when it comes to doing a DVD that I've never done before (like a new Cathe DVD or when I purchased Supreme 90 Day), it's especially nice to already kinda have an idea of what weights are used in the video.
I think you'll love doing worksheets, it's sooo hard sometimes just trying to remember what weight you used the previous time doing a certain workout, and sometimes you need to see that reminder because you may undercut yourself, or find that you've been using a certain weight for a certain exercise for FAR too long, and it's time to step it up
Constantly upping my weights has made a HUGE difference for me as far as body composition. Especially after finishing STS, I realized that even though I'd kept track of what weights I'd been using all these years, I hadn't pushed myself
nearly hard enough (which was hindering my progress more than I realized). I'm happy to now take what I learned w/STS, and applying it to all other w/o's.
Hope you find that the worksheets help you lots, too