Beside "test" by sparing/wrestling, the other 3 training stages, develop, polish, and enhance can be seen in the following clips. It's very easy to learn and develop any particular MA skill by following these 4 stages (sparring/wrestling clip is not included).
What's your opinion on this?
Develop by partner drill:
Polish by solo drill:
Enhance by weight equipment:
What's your opinion on this?
Develop by partner drill:
Polish by solo drill:
Enhance by weight equipment: