While you might prefer an outline, I prefer to go through Galatians I see how Paul develops his argument as he does it. I am not your student, so I need not follow your methods.
You of course, can do it however you think best. You are missing things as you go that would be helpful to you. You are making assumptions not in the passage.
I only suggest a summarized point outline so that you will see what is there and not what you wish to be there.