I'm assuming that you were talking about your first HubPage articles, and getting a higher score. In my opinion, you have good topics, and some good beginning content.
- more content, make them longer by adding additional detail, examples, etc
- more capsules, add more photos, news, etc
- look at the hubs of top hubbers with good scoring pages. See how they construct their pages, how long they are, etc. Then edit your existing hubs based on what you learn. I'll bet the scores go up!
- write more hubs. Practice doesn't always make perfect, but it generally makes better hubs.