First of all, you need to pay attention to the following points: light, angle, expression, posture, props, scene and so on.
Let's start with the background. It's better to choose something simple, not to say that the bustling scene is not possible, but to pay attention to the unity of the scenery. If you choose an irregular and messy background, it is easy for others to take over, you can't stand out, and you don't seem to have an accent.
If there is no beautiful background around you, choose a plain wall.
Props and poses. Books, cups, flowers, doors, mobile phones, beautiful nails, glasses, hats … can all be your important props. Pay attention to adjusting their proportions in your picture.
If you choose props as a collocation, then I suggest you try not to make too complicated gestures, so that the information in the picture is less and concise, which can highlight your main body.
There are many gestures, such as scissorhands (rarely used, to avoid being too single), imitating small animals or sculptures around you, holding your face, blocking your face, not looking at the camera (including side face, closing your eyes and lowering your head) ... There are still many gestures that you need to unlock yourself ~
The expression rejects the artificial expression and tries to be natural. You can also learn to make expression packs, make faces and so on. You can often browse the expressions of some beautiful models online and learn.
Angle. Everyone's image is different from different angles, and it doesn't have to be 45 elevation. If your pupillary distance is relatively large, try to shoot the phone farther, and the pupillary distance is smaller and closer.
If you have a particularly beautiful part of your face, you can take close-ups.
Of course, everyone is pleasing to the eye from many angles. Don't always take pictures from the same expression angle, unless you take a selfie just to punch in every day.
Light. A very important point can even affect the texture of the photo. Usually we choose to welcome the light, which will make people look more shiny and radiant. Of course, it's not that the backlight is not good, but if the camera technology is not very superb, it's easy to take a "ghost film" effect. At the same time, there will be a lot of noise
Although there are many mobile phone software that can adjust the exposure dark angle in the later period, the innate conditions are still very important.
Including what I said above, you need to adjust, shoot and try more according to the situation on the spot to feel which lighting effect is most suitable for you.