This one is for my fiction writers again. Don't keep on repeating what a character did a few sentences or paragraphs ago. If John slid off the bed and sat on the floor to ponder his reflection in the mirror in the first line of paragraph 1, your readers aren't likely to forget that 7 sentences later. So, don't introduce the next paragraph with "As John continued to ponder his mirror image having slid off the bed and sitting on the floor a few short moments before..." We remember. Cut!