All of the advice above will help. Especially a good video of yourself for additional critiques. But watching slow motion videos of really good casters will help too, and reading all you can about the mechanics of casting. That is a whole new language and daunting at first, but once you get the terms down, things make sense.
so line butter dosnt help at all?
The only times I notice much difference is when sight fishing in the salt. The line sits on a boat deck and gets sticky from the salt and baking in the sun. The coating also gets softer and creates more friction in the guides and does not shoot so well. Line grease helps immensely, but only for a very short time. I've never noticed a lot of difference with or without up north except that it prolongs the life of the line and tip tops and helps keep it floating.