Potion 9 from Sebastian is a great product, but I need to understand what style you are after.
If your hair is curly and you like to wear it this way then potion 9 on its own will not create what you are after. ...More >
Given that your hair is naturally curly I would have a weave cut throughout your head to allow the natural movement to cascade more freely which will help stop the "Big Hair" situation that happens as this opens spaces within your hair to allow more control. I would recommend L`Oreal Professional Tech-ni art cream curl products to help tame and control your hair.
Apply this with your fingers and comb through when wet, then allow to dry naturally keeping your curl in control, this will allow you to play with the style when dry without making it frizzy.