How to take a good portrait with Canon 550D and 18-55 lenses?

This topic is too big. This is a topic that can be written in a book. To put it simply, I don't know if you are satisfied or not. Portraits should avoid shooting with a focal length less than 50MM, because the lens distortion will be relatively large (except those who intentionally want the distortion effect). Portrait in the lens, not much required, the main point: 1, portrait photos should highlight people, and don't let the picture have too many messy factors. 2. The focus of portrait should be on the face, preferably on the eyes, because only the correct exposure of the face is the most important. 3. Portrait photography should have light. If the natural light is too dark or too strong, it is not suitable. When it is too dark, you must use a flash. In order to ensure the color and texture of the skin. 4. Don't set the contrast and sharpness too high when shooting women and children. Men and old people can shoot harder. This also includes the arrangement of lights. 5, portrait composition, pay attention to trade-offs. Men and old people mainly shoot verve, children can be dynamic and expressive, and women can be feminine. Of course, we can't generalize. This depends on everyone's own feelings. 6. Nowadays, people, especially women, usually take photos with their back lights on. Generally, there is a main light and one or two auxiliary lights. The main light comes from the left or right angle of the back of the head, and the auxiliary light supplements the face from the opposite direction of the main light. If it is outdoors, the sunlight is usually the main light and the flash is the auxiliary light. 7. Communicate with the model to ensure that you can understand her unique expression, personality and expression charm, so as to better master the shooting method. 8. Pay attention to control the shooting position, depth of field and focal plane. This is a very important question. Forget it. Talk to you again sometime. This problem is difficult to finish.