I never physically planned on a piece of paper until roughly three weeks before the English Exam when my English teacher said that it would be much better if I did (actually, I think she said something along the lines of 'one can only get so far without a plan to work with'). Previously I would just look at the prompt, think of four suitable ideas for the body paragraphs, and then start writing while I continued thinking. It worked well, but I wouldn't suggest anyone else to do it.
Then I started to actually write plans before I began to write the essay... to say the least, I really sucked at writing plans. I guess normally I would write down in a few words the gist of each paragraph and then write the evidence underneath it, while in Language Analysis I would find four approaches and use my pen to show where each one is.
However, in the exam (much to the disappointment of my teacher if she were to read this) I totally ditched this way of planning. Instead, for the prompts I would write the numbers 1-4 and have one to two words following each to show what I would be writing for each paragraph. I didn't even write anything on the Language Analysis speech and had the approaches already sorted in my head during reading time...