and once you get the hang of it you can add your own comment css class to just a single comment, I have used that to repurpose "comments" for all kinds of things.
You could for example make it big and bold, or depending on the layout, the comment contents does not need to be related to the field it is associated with...
I recently had a screen with many columns spanned across the form, the comments become overwhelming, so i kept the fields on the left side without, and cherry picked where to place the comments on the right - if you are careful it can look quite sharp as it resizes with different data/sizes etc, of course its real easy to get real ugly - both with too much data or not enough, for that"liquid" flow - so you must combine fixed and variable techniques.