Be sure you are writing a new "post" by clicking the white/orange pencil. DO NOT write "new blog" as your teacher can't read that... It is an entirely new blog. If you already have two or more blogs... Copy and paste your posts into the first one you made (it should have your teacher as a "follower").
Remember, the further you move from writing this for your teacher the better you will do. Write it as a public document that captures your learning, effort, and growth for the year. An honest personal reflection that a complete stranger would be able to understand. :) due Friday... Good luck!!!