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.
By working hard on what you have already learned is the first sign you are ready for more. Remember your teacher and loved one's birthday and special holidays. No matter how small, show them appreciation that truly comes from the heart. A sign of thoughtfulness allows a bond to develop making the teacher feel appreciated. Wanting to show his or her gratitude, your teacher will reciprocate by genuinely wanting to further your knowledge.