Stepper with left right combination

#include <Stepper.h>
char incomingByte;
const int stepsPerRevolution = 2000;
Stepper myStepper(stepsPerRevolution, 8, 9, 10, 11);
Stepper youStepper(stepsPerRevolution, 2, 3, 4, 5);

void setup() {
   myStepper.setSpeed(800);
   Serial.begin(9600);
}
void loop() {
  if (Serial.available()) {
    
    incomingByte = Serial.read();
    
    if(incomingByte == 'R') {
       youStepper.step(stepsPerRevolution);

    }
    
    if(incomingByte == 'L') {
       myStepper.step(stepsPerRevolution);

    }
  }
    
}