1. There is zero margin for errors.
2. You will be looking at a screen most of the day which is 2 dimensional. Then you need to convert that image to 3 dimensions in your thinking process: you have to maintain vertical, horizontal and lateral distance between all aircraft in your assigned airspace. Vertical is distance above and below other aircraft. Horizontal is distance behind and or ahead of the aircraft. Lateral is the distance left or right of your aircraft.
You can go the following website: https://www.flightradar24.com/29.25,-84.49/5. This site will give you an idea of how many commercial aircraft are in the air at any given time.
Jeff recommends the following next steps: