Need help for lesson 7 on the Animate An class book

[Christopher5FC7]

To whom it may concern,

I need help for lesson 7 on the Animate An class book. I am trying to fix the flipping and weird distortion that my flame goes through when I put in my shape tweens and I already tried adding shape hints as I thought that would fix it but it didnt. Please if any one can help asap I would gladly appreciate it! 

Thank you,

Chris

[Nicktendo28]

https://www.youtube.com/c/TipTut/videos?view=0&sort=p&shelf_id=5

https://www.youtube.com/watch?v=k25G83FqiEI&t=1s

https://www.youtube.com/channel/UCBKor0A2opvYM0Rb8pxWRuw