It depends on your personality. If your personality belongs to that cute type, then I suggest you choose some cute pets. Or the heads of some lovely children. If my personality is a royal elder sister, and I usually prefer domineering and cold things, then I suggest you choose some handsome and cold pictures as your avatar. If you are usually funny and like to laugh, then you can choose some funny pictures. You look comfortable and others can see your personality at once.

I remember that non-mainstream avatars were particularly popular. Everyone has a doll's head, big eyes and a small mouth. Everyone wants to see a person, and the words written are all non-mainstream fonts that show their personality. However, this fashion trend seems to be out of date. If you like this style of avatar, this choice is also very good. Now everyone has many types of choices. As long as they look comfortable, they feel happy and comfortable.

As for the screen name, I don't think it is necessary to write it that long. Some people have a long list of screen names, while others have to read it for a long time, so they won't think about the meaning of your screen name. I think the screen name matches my avatar very well. Needless to say, it's so vivid. The screen name should be as short as possible, as long as it can express the meaning. There is no need to write a few words to make others feel different.

In fact, the screen name and avatar can mainly reflect your own personality, as long as you choose your own identity, your own ideas, and let others look comfortable and happy. What you like is the best. People won't care too much about what screen name you have or what avatar you changed. Just be happy.