2. Don’t pitch more than one story at a time.
This is like shooting from the hip. In fact, it’s like shooting from the hip with a Gatling gun. Bullets go everywhere, but none of them hit their intended target because the writer didn’t aim. If you clutter a query with five different ideas, they tend to be watered down, and the mediocre ones only diminish the impact of any good one.
Be a writing sniper: Focus on one shot, one idea, at a time. Imbue it with everything you’ve got, and make it count.