If you have beginners and advanced, the advanced students may want to assist the newbies.
I would recommend using a MAIN method for a specific technique and cover it in detail. If there is time and interest, you can cover an alternative method once the main method is understood. I have been in classes as a newbie where the instructor tossed out 3 competing methods and the instruction became confusing.
Watch the students. I think it becomes clear by their action if they "got it" or not. I remember a sample sewing session where I was the only one who had the button holes going the wrong direction. :oops: (Had I realized that I was making button holes, I might have realized that I was off.)
Have fun.