Here are some examples from other sources for you to model your entries on.

This first link is to the Applied Social Psychology (ASP) blog. You will see a wide variety of entries there. The best ones do the following:

1. Explain the situation
2. Describe how the theory explains the situation
3. Include facts not just opinions (and therefore are cited and referenced)
4. Related to #3 they have links to more information
5. Have some style to draw the reader in; either through a compelling story or graphics

Here is another link to my personal blog (moving psychology) if you are looking to pattern longer reads.

And here is a link to the World Campus Psychology Club blog if you are looking for other things you can do. Warning, most of the entries in this blog serve a different purpose than our blog and the ASP blog. But there are a few if you read through that can serve as examples as well.