Time wouldn't always allow 3 body paragraphs, but I'm pretty sure on the actual exam I wrote 3. As long as you outline what you want to say in the introduction (graders love straight-forward introductions) and you stick to those points, you'll get a fine grade if you make enough sense. My main...
Depending on the darkness of the marks, they could have potentially confused the Scantron machine and counted some of your scores as incorrect. However, if they weren't very dark markings, they might not have made any difference.
Hopefully those marks didn't hurt your score!
There is absolutely nothing wrong with you. Everyone deserves to have their personal likes and dislikes. Sometimes those likes may be a little more embarrassing than others, but I'm sure there's nothing wrong with you.
I usually just buy them, but then kick myself later for not trying something on that ends up not fitting correctly/looking awful on me. I should probably start trying stuff on, but sometimes I'm too lazy!