As a teacher candidate, I am observed constantly - by my cooperating teacher, university supervisors, school staff. I will have to take video of myself teaching and reflect on my teaching for the Teaching Performance Assessment. It's a hard thing to watch yourself, or to hear constructive criticism. But it can also be helpful.
I might think that I explained instructions clearly to my students by speaking slowly and clearly. But if someone else is watching me, or I reflect on myself, I might realize otherwise. Only when I realize I made a mistake, and reflect on how to improve, will I improve.
Having another teacher observe you, or video-taping yourself, might help you realize little ways you can make instructions clearer to your students. You can hear yourself talking to see if you're speaking as slowly as you think or giving instructions as thoroughly as you believed. If these options aren't available to watch yourself, make your instructions clear by writing them on the board, giving hard copies of them, or making them available online. Then even if you miss something when you speak it, students will still have access to the information.
Having another teacher observe you, or video-taping yourself, might help you realize little ways you can make instructions clearer to your students. You can hear yourself talking to see if you're speaking as slowly as you think or giving instructions as thoroughly as you believed. If these options aren't available to watch yourself, make your instructions clear by writing them on the board, giving hard copies of them, or making them available online. Then even if you miss something when you speak it, students will still have access to the information.