If ever there is a goal each class, it should be to improve at just one small thing minimum. Losing the same exact way for a long period of time causes plateaus to happen, but small improvements over a long period of time results in good progression.
Even for the most basic techniques, a lot of beginners may not see all of the minute details. And as an instructor, it sometimes is frustrating demonstrating/teaching when the students just can't absorb all of it at once.
But through little steps, this is possible! Rome was not built in a day... lol.
now an awesome "smash" pass by Rafael Lovato Jr.