Use of techniques with kindness and appreciation is a sign of strength. It is your responsibility to do your best in class. Do not allow you to simply follow or stand idle. Practice regardless of your level of ability or comprehension in a technique. Tenacity is the ability to keep trying with or without your teacher being present.
Refined cleanliness means refined mind.
Clean clothes and body show by example the honor and ethics you possess. Do not ask to be taught more techniques. Let your instructor decide when you are ready. To ask is a sign you have perfected that which has already been taught to you. Techniques require a lifetime of perfecting.