I'd like to change my face and make it a little more proportional, I don't really know how. (Photos)

Hi, I agree from your pictures your nose appears long, especially in relation to the lower part of your face. Roughly speaking, the nose should be about the same height as the forehead and the area from the chin to the lips. Your chin is pretty far forward, but not very long. Your upper lip seems short (at least from the pictures). You have a little dorsal hump on your nose. Taking the hump down and rotating your tip up a small amount will give your upper lip a little more length. A genioplasty (moving the chin) slightly down and back would give you a little more lower length, decrease the crease between your chin and lower lip, and put the tip of your chin in a more feminine position. This would give you the facial harmony you desire, subtly changing the look of your face to bring the focus to your eyes and high cheeks.
Best wishes,
Brad Gandolfi.
Craniofacial, plastic, and reconstructive surgeon

Hi, 
Thanks for your photos which highlight your concerns well. 
First, we look at the ratios of the upper, middle and lower third of the face. The lower third of your face, ( from the base of the nose to the chin), is slightly smaller than the middle and upper third. These should all be equal. So there is a case of increasing the chin vertical height.
Secondly, looking at your nose, it could do with a narrowing and refinement of the tip. On the profile view, the dorsum could be lowered ever so slightly. You have thick and heavy ala. Changing that would be difficult. However, if the tip projection is lifted, the vertical length of the nose will reduce and it will look smaller. So a combination of narrowing and lifting would be required to make it look smaller. As the nose tip is lifted, more of the upper lip will be visible as well.
Please consult a good Aesthetic Plastic Surgeon, who has considerable experience in changing the nose and chin simultaneously to achieve the refinement you want.