lip sync tween

[Nixon37143940pp8i]

I am very new to animate and am trying to do some very basic lip syncing. I was half way through it when i realised it looked very rigid. How can I tween these frames? (please don't mind my bad animation I am very new)

[kglad]

there's nothing in your post, other than words.

[Nixon37143940pp8i]

oh, i thought i uploaded my animation. My mistake, let me give it now. And when I mean "These frames", i mean the lip sync frames. I am just using Clasic Tween.

[Nixon37143940pp8i]

whoah, that turned out really weird. thats the wrong one.

[kglad]

it's already tweened.  increase frames to  increase smoothness. then you can adjust frame rate if speed is an issue.

[Nixon37143940pp8i]

So, is there no other way to smoothly transition between two mouth shapes like in bfdi:TPOT? I'm trying to replicate what That looks like. 

[kglad]

you would to hand draw if animates lip sync is unsatisfactory.