Simple:
* My avatar in the game is a fierce warrior with glowing blue eyes.
* The artist created a digital avatar of the famous musician.
More Complex:
* Though initially hesitant, she soon embraced her online avatar, finding a sense of liberation and self-expression in its virtual world.
* He felt a profound connection to his character, seeing his avatar as a reflection of his own inner struggles and aspirations.
* The company's marketing strategy relies heavily on the use of avatars to engage customers and create a personalized experience.
Figurative:
* The politician used the media to craft a public avatar, carefully controlling his image and message.
* She presented a confident avatar to the world, carefully masking her insecurities and anxieties.
The best sentence for you will depend on the context and the message you want to convey.