Although I cannot share an annotated diagram, Here are the pin connections
Pin 1 Pin 2
Arduino 2 L298n In3
Arduino 3 L298n In4
Arduino 4 L298n In2
Arduino 5 L298n In1
Arduino 6 L298n ENA
Arduino 7
Arduino 8 Flame sensor D0
Arduino 9 Servo Signal
Arduino 11 L298n ENB
Arduino A4 MLX90614 SDA
Arduino A5 MLX90614 SCL
Arduino Vin 9v (Via Power Distribution Board)
Arduino Gnd Gnd (Via Power Distribution Board)
Arduino Gnd Flame sensor Gnd
Arduino 5v Flame sensor Vcc
L298n 5v Servo 5v
L298n Gnd Servo Gnd
L298n Gnd MLX90614 Gnd
L298n 5v MLX90614 Vin