I am 18 years old male and i feel like i still have a "baby face" .... are their any ways to make my face more masculine? i am a very thin guy

Baby face: There may be ways to make your face appear more masculine, such as weight training and aerobic exercise. However, this will have only limited effects, since the way your face looks is not totally controllable due to genetic and developmental factors. As a psychologist i'd be inclined to focus on assertiveness and acceptance. There's nothing inherently wrong with having a baby face.