How does a flash fiction writer go about writing a novel? Simple you forget all the rules you have learned and begin to put back in the gestures. Every sigh, laugh, scream counts when writing a novel. The five senses come in real handy when you are writing longer pieces of work, just as they can make shorter works shine.
Backstory helps in a novel, though you don't need to give it all at once and certainly not in the beginning. Make your main character likable, before everything begins to go south for him or her.
Try to pace yourself or you'll find your story ending well before its time. I know this is my biggest problem. I want to jump to the action scenes which lead directly to the ending. Most novels are 75,000 words + and we are only trying to accomplish 50,000 this month.
So, as all of us NaNoWriMo'rs embark on this fantastic journey into many worlds created in our own minds, wish us luck that we find our perfect endings, and middles and while we're at it beginnings.