Hello to all! I retouch about two months.
I need your criticism and advice.
I ran into a big problem - skin tone ((  I want to get amazing colors, but so far everything is bad.

Do you know good videos on youtube or literature?
How to get such amazing skins (as an example)? Does it depend on original photos?

I have attached 2 of my work - before and after.




And 1 example of what I admire.



Waiting for your criticism and advice! Thanks!