But you should be careful about using the letters to start sentences. That should be a big letter rather than small letters but that is only a few small mistakes. You don't think.
But you should be careful about the use of the letters to begin a new sentence. This should be more than lowercase letters. But that was only a few mistakes. You do not think
But you should be careful about using letters to begin the sentence again. Which should be larger than the small letters alphabet But that was a mistake. Don't you think a little.