A avatar is the character that you have chosen to represent you in the game. It is the total character race, gender and the profession you have chosen. Your character will have the look you have chosen when creating your character, so your own style can be brought out.
The character you create is based off what the game will allow you to use to make your character. From hair color to how tall your character can be, what race you can be, some games you can other races than just human, maybe you want to be a slender elf or a short dwarf like creature, or even a troll.
This character creation allows you to have your own look. Once you have the look you should start on your character build
I found this video and found it funny and great and Thought it be great to share here with You. Its by the guild. If you Want to own the song, you can buy it by clicking on the link. (Do You Wanna Date My) Avatar (feat. Felicia Day)