To be successful on Hubpages you have to write as often as you have time and your hubs can be about personal events like your first two, about a topic or even poetry. Try to pick topics that are popular but in your knowledge base. You need to research your topic as your information should be accurate. Make use of good pictures as having a nice layout makes the hub more attractive.
Go to the forum where there is a wealth of information, a place to interact with other hubbers and many answers to common questions. Another thing is to read a lot of other people's hubs and make comments, as that is a way to make friends and attract fans.
About every other week they pick about 12 hubs from newcomers and put them up for people to vote. You will find this information on the forum page on the right side. I hope these tips help and I wish you good luck.