Treating people in a way which will keep them looking authentic and believable rather than artificial and over-done is the gospel which I follow. Correcting ageing needs to be done with attention to what is going to look real. A bit like "Fake news", we have become used to seeing "Fake facial features".
How to avoid this:
With Botox stick to keeping some expression if you are over 50 so that the face looks in harmony.
And with filler avoid over-plumping lips which only looks good in under 40s, but you can keep your cheeks well volumised with a filler cheek lift as this will prevent sagging of the lower face. The filler must be placed deeply on the cheek bone to avoid the doughy cheek appearance.