Let's add more info into the "Post" folder, since the list on the homepage will have a preview of several post. We'll add a preview image at left (200 px by 200 px with a 1px Stroke effect) and a brief text at the right. Also, we'll add a preview of how many comments the post has on top right. For the comments field, create a new folder named "Comments" and add a tiny background with a small cloud and some little stars. Basically, just repeat one of the previous steps when we were designing the header, but in a tiny measure. Then add the comments number and the word Comments below.
Next, add a Tags line below the post and add a little star at the right of that line. Add a little star field as a background for the post, just if you want to. Finally, draw a divider (#1D324F) for the post using the Line Tool.
Then duplicate the "Post" folder and edit the copies to create two or three different posts. It's very possible that your document's height needs to be increased at this point, just do it by using the Crop tool or Image > Canvas size, jut like in Step 1. When you have resized your main document, increase the height of both the main background and sidebar background as well.