What do I have to study after learning Design Patterns? [on hold]

I have just read two book of design patterns, Head First Design Patterns and Design Patterns for Dummies. They are extremely attractive books. I wanna improve my design skills as well as write a big application (like a Music player), but I wonder what do I have to do next, apply the MVC model or other model?
Is the MVC model the best model for programming any application? I also wanna learn more about the MVC model. Could you introduce me some of books or websites to learn? Thanks in advance,