You know what helps sometimes... is that you read alot of material from your favorite author. Look at the style and so how he organizes the chapters and individual scenes.
I have also heard that if you sit down and write out some of the chapters, handwrite that is, you will start to remember how the sentences and paragraphs are formed and start mimicing that style of writing. I cannot remember where and who I heard that story about, but a assistant who often typed up her boss'(he was a writer) stories that had been handwritten ended up starting to write like him. It turned out she was a great writer, she just needed a sense of style.
Other then that... I am not sure what to say. I write all the time, have been since I was in junior high, and it just pours out. Sometimes writing is just natural rather then a learned skill. Other times it can be learned. Good luck though.