The only thing i think you should know is not to listen to a damn word anybody says - not neccessarily here, but anywhere. Advice is fine on structure and paragraph construction but you're best to just learn that yourself through experience.

Write what you want to write, what occurs to you and don't force twists into stories, they have to arise naturally otherwise they always seem forced and can be seen coming from a mile. Never listen to what someone else wants to read unless you are writing purely to be successful and not to express yourself.