Blog design

I've been trying to learn how to make our blog unique and fun. So, there will probably be a lot of changing going on over the next few weeks. Sorry if it gets confusing but hopefully I'll find a style I like. If any of you have tips on how to customize a blog I would love some ideas and feedback. I've looked at some free templates and things but I can't find one I like and I want to do my own thing but I'm not sure how to. Any help would be much appreciated.