If you ask aN English teacher, the native Engish speaker, how to improve your (oral) English,
he/she will alwasy says that "practise, practise, practise".
and he or she may also tell you that just stand in front of a mirror, and talk to yourself, watch your face, watch your mouth, and then you can see what happens, you can see your mistakes, you can see~ your speaking. Maybe it IS silly, but, it IS a good way or a useful way to practise~