You can time a part perfectly and play it badly. And some people have very individual offbeat timing, which is their own. It works simply because they are who they are.
I've not as yet found one hobby that would absorb me completely when I'm not working, but I have just bought a new apartment and didn't quite bargain for the amount of effort and time and money that that absorbs.
Imagine that everything you are typing is being read by the person you are applying to for your first job. Imagine that it's all going to be seen by your parents and your grandparents and your grandchildren as well.

