OK, I'll give you my personal thoughts on this.
I'm not a fan of seminars, and I've got some real reasons for this. Maybe you can consider what I'll say about it and take that into consideration when you plan your seminars.
I think there are a lot of traps that people can fall into, in the seminar scene. First, it is a short episode when you are working with people who are not your regular students. Once the seminar is over, you likely won't see them again unless they show up at another of your seminars. So don't teach them something that takes a long time to learn, and even longer to understand and develop well. Like a form or kata. You cannot teach it adequately in a couple of hours or a weekend. If you get thru the whole thing, then people likely did not learn it well because it was too quick. They do not have an ongoing training relationship with you, so they do not have the opportunity to continue to develop under your guidance. So they leave the seminar, practice the kata poorly, and someday teach it to their students, poorly. Or else, you only teach them a portion of the kata in an attempt to raise the quality. But what's the point in that? How will they finish the kata, and they still need an ongoing training relationship in order to improve the portion that you taught them. So it's still a problem.
Teaching something from an art that the students do not have a background in. Different arts are built upon a different foundation. Some systems have a similar foundation, others are wildly different. If you don't have that foundation, the techniques of the art will not work as they are designed. You cannot teach that foundation in a short time, so you cannot teach elements from the system to people who lack the proper foundation. Too much to try and accomplish in a couple hours, or even a weekend. You leave people with some poorly and partially understood material, with no opportunity to follow-up and improve their grasp of it.
Some people, I think, travel the seminar circuit and it seems to me they are trying to learn an entire system thru attending different seminars with whatever instructor happens to be giving one. I think this can cause a mish-mash, as different instructors may teach the same material differently, so there is no consistency in what they are learning. Learn something one way from one teacher, then another way from a different teacher, and it conflicts. Which way should he do it? Better to have one good teacher, with an ongoing student-teacher relationship.
These are the problems that I have with seminars, and this is why I don't like them. Give these some thought, and maybe you can avoid falling into these traps.
One of my teachers does do seminars sometimes. He tries to teach things that can be universally applied, no matter the background of the attendees. So he often works on nerve strikes and whatnot. These don't have to be technique-specific, people can hit the nerves however they want, as long as they are using good technique however their style does it. I think this is the best way to teach seminars. Don't be too style-specific, unless the attendees are all from the same style as what you are teaching.
