Stretch your body properly before beginning a routine.
Let your body groove to the rhythm and beats of the music naturally.
Do not look at your feet while dancing, practice your moves and try to look up straight.
Try different forms of dance and see what you enjoy doing the most.
Dance with multiple partners to improve your form.
Don't focus too much on being perfect, give yourself some time and you will see your body language improving.
Work on improving your posture and you will see your moves improving soon.
Don't worry about your performance, focus more on having fun.