When I assess the blog posts for your type poster project, I will be looking for the following:
Development - Initial draft drawing
Experimentation - A few work-in-progress shots of Photoshop (whole screen is best)
Presentation - X-Large images, Concise annotations of your posts - write about what is happening in the post.
Final Designs - Choice of type / image / alignment
Clear images of your final posters
Evaluation - Write a post. what went well? what didn't? what did you enjoy? what didn't you enjoy? How would you change it?