My favorite is Cartoonify. Top right corner. https://www.cartoonify.de/
Write about how your avatar represents you. Include a link to the website where you created the avatar. Remember to include your avatar as an image in your post. If writing a post about your avatar, choose an interesting title not just avatar as this will cause an error on your blog.
Whenever I visit a blog for the first time, I always check to see who the person is that is writing the blog posts. Do they have similar interests to me?