If you retain fat around the face get used to the idea of jowls and turkey neck as you age.
By the way your fatty liver won't thank you either.
You're no paragon of youth at 54 to be lecturing us on looking young. Here's me at 58 at gay Sebastian Beach, and I didn't do anything. Other than no smoking or drugs, and moderate drinking. But lived outdoors a great deal and rode motorcycles from one end of the US to the other, all things harmful to your face.
Here I am a year later at 59, I think the oldest guy in the group (a public photo), on the far right. Yeah, I'm just a little thing. But not as overweight as guys younger than me.
How do you avoid aging? Depends on the person. Genetics obviously helps. That's the thing that helped me the most, because I sure did everything wrong on my own.
And follow a healthy lifestyle, that I kinda violated, except for my avoiding smoking, drugs and excessive alcohol. I'm overweight today, had some health problems that put on weight. But losing those pounds today.
Facial appearance following weight loss? I'd consult some experts. Everyone is different. Some saggy skin stretched by fat may need a surgical tuck. Skin stretched for years doesn't snap back into place. Skin stretched for years to accommodate fat gain will actually permanently grow. Applying skin creams won't help you much.
Less severe facial fat loss may allow some exercises, where building underlying muscle may do the trick. Difficult to advise an individual online here.