Your daughter is old enough to understand simple table manners expected of her. Let her use only one utensil, either a fork or a spoon, but not both at the same time. Choose one for her, most appropriate for the meal.
Keep your attitude serious, to avoid giving her the impression that she is entertaining you with her bad table manners. Meal time is not Comedy Hour. Tell her the rules in simple terms, as to the behavior you will and will not accept.
The instant she displays behavior that breaks the rules, quietly and quickly take her plate and utensil away from her, place them out of her reach, and tell her this is what will happen any time SHE CHOOSES to break the rules. This way, she'll learn to accept responsibility for her own actions.
If she makes a fuss, ignore her and continue your meal, so that she understands you will not be swayed by any use of manipulation tactics. Let her think it over for a minute or so, then replace her plate and utensil, reminding her she needs to follow the rules.
Repeat, with absolute consistency, as many times as necessary, and very soon, it will become evident to your daughter, that her bad eating habits will simply not be tolerated, but instead be punished with the removal of her meal.
The comparison may seem strange, but this method of gratification denial, is similar to a simple training method, extremely effective for dogs with obnoxious habits (such as jumping up on visitors, etc). The moment my dog exhibits unwanted behavior, I quietly say, "Uh Oh", then lead him into any unoccupied room, and shut the door. After two or three minutes I let him out, confident that he will never again repeat that bad behavior (and he never does). The punishment of separation from his beloved "pack", even for a very short amount of time, is all that's necessary to eliminate his unwanted behavior for the rest of his life! Unfortunately, we can never again watch reruns of the motion picture, "Rainman" in his presence!
Good luck to you, hope my advice has helped. The most important things are consistency and a calm and serious attitude!