You have some good content in your hubs, but they could still use a little work. For example, you use the word "I" frequently in your hubs. While, it's helpful to add some of your own personal experiences in a hub, you'll want to be careful that you don't get into too much story telling. That said, you have some really great content!
Your best bet is to take a look at some of the "best" hubs and see how they are written and formatted and kind of find a style you like and go with it. Don't copy people's hubs -- but some of the elements they use. For example, I used to write a HUGE block of text until I noticed that a lot of the higher ranking hubs kind of separates their text into section, etc. Making this change really helped my HubScore a LOT and my traffic.
Best hubs: http://hubpages.com/hubs/best/
Also, someone suggested an article from the Learning Center to read. I agree, but instead of that one article, I suggest seriously just reading the WHOLE learning center. You're probably thinking, "It's probably boring and unrelated to what I'm asking" but I PROMISE you that you'll come out of the learning center a new woman! And when you apply that knowledge, you will see your HubScores going up, up, up! (Earnings, too!)
And on a side-note, don't just follow anyone who will follow you. If you do that, you'll find HubPages isn't fun because you aren't seeing hubs that interest you in your dashboard. As you browse around HubPages, follow people who write things that TRULY interest you. It makes it more fun. :P