Re: Post Seminar Blues
It's very difficult to judge your own technique. In part because, as you get better, skilled partners will up their game accordingly. (And they're especially likely to push you a bit if you're preparing for a test.) In part because all of the regular members of your dojo are progressing at the same time, so your relative level may not change much. And in part because it's impossible to tell what your own technique feels like to uke.
Comparisons between dojos are even harder, since in part differences reflect different teaching approaches: you are probably not as good at some skills, but better at others, simply because your own teacher emphasizes different things. The different paths eventually converge.
Trust your teacher's judgment.