I would like to achieve a heart/v shaped/defined face. How can I do this? Preferably non surgically (Photos)

Hello, i am quite unhappy with the shape of my face. It lacks any kind of definition and seems rather jowly which gives me a long face. Its as though the whole face needs tightening up. I would like to achieve a heart shaped face. Any suggestions would be most welcome. Particularly London based advice. Thank you!

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