Im a starting pitcher for the varsity team at my high school

you get a tire and set it up against a tree, you start at ten feet away and throw slow just to get your accuracy down, move back 3 or 4 feet and throw l little harder. keep movin back once you get the accuracy down. lots of pitchers can throw really hard but it doesent matter if u cant locate your pitches. look at greg maddox. he only throws about 84 mph but has been successful for 20 years.