I think your lesson plan is well written and easy to understand. The idea of making a poetry for their own is great for their creativity. Technology tools integrated to this lesson also look proper to accomplish this project. To break down the lesson into 5 days looks very helpful for students to take time when there are creative activities expected.
I just recommend the other blog tools for the kids. Blogger is one of Google app, so there is an age restriction. It would be convenient for them to use weebly.com which provide student's blog for free.