The one convention I would strongly suggest that you adopt is to type everything in lower case letters, and do not include spaces. What I'm going to do is to go back and add formatting to what I have typed. When I am done you will see a much pretty version below. Oh, there seems to be a tiny problem. When I finish with an indented paragraph, Composer wants to keep me indented.
Different editors behave differently, but that's fine.
In this case, just use the Unindent button, which is the third from the right in the image above. I'll let you figure that one out for yourself. I really don't recommend it. Blinking objects are very annoying, and they just make people think you're a jerk. Only use blink when you want to call attention to something that is terribly important, and preferably a new addition, like the test has been canceled.