Sorry if this sounds blunt, but it's not your job to figure out this type of thing on your own. If your teacher's teaching method is based on them being incapable of explaining what you need to do properly, instead giving you a bunch of vague, cryptic statements, your teacher isn't very good, and you may progress faster with another one.
This seems premature as we know almost nothing here. We have an imagery used by the teacher and that's it. Not how the teaching usually goes, whether the teacher demonstrated anything. One thing I'd suggest as a student is to say "I don't understand. Can you explain it to me? / Can you show me?" Good teachers want to know if something hasn't been understood. It is not seen rude to ask, nor does it make you appear stupid if you ask. To the contrary.
Fair point, I'll take that back until we know more. I think I let some old resentments around teachers giving vague instructions and expecting the student (i.e. me) to just know what is needed slip through
It is worth noting, that there are some cultures that frown upon questioning the teacher. In such cultures, the teachers word may be perceived as law. A student from such culture may be hesitant to ask. Nonetheless, you do present notable concerns.I recall a teacher telling me about an experience. He was delivering a guest lecture in another country to university students, and was trying to get the students engaged in a discussion on the lecture topic. However, the entire class remained politely silent and resisted open debate on the topic.
I personally have zero patience for authorities whose egos cannot handle being questioned. I feel that part of being an authority is that you are knowledgeable enough to 1) be able to answer questions and satisfactorily answer attempts to (respectfully) pick apart what you are teaching and 2) be open to the fact that you don't know everything and that critiscism of what you're peddling might be legitimate. Questions and challenges to what you're saying needs to be welcome, encouraged even - but presented in a constructive, respectful manner, of course.