Is It Possible to Change the Projection of Your Jaw/lengthen Face?

I have a small face because my lower jaw is small and isn't long enough (my chin is in a good position but my jaw needs to be moved down?) Because of the projection of my jaw, the front view of my face is very rounded, it doesn't come down to a point like most people, it's almost a flat kind of shape. I notice that when I extend my jaw downwards to make my face appear longer and more pointed, it looks much better from the front and the side. Is it possible to lengthen the jaw and by how much?

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