Some interesting articles/reads for you if you want to know more about PS!
You can go to http://www.aestheticshub.com/thirdparty/animation-library.html to check out how our nose structure is like ( for me I choose to know more about rhinoplasty ) then they will show how the different parts of the nose contribute to the overall appearance of the nose.
I think the eyes one are pretty interesting too!
Then next would be this -> http://www.aestheticshub.com/thirdparty/virtualaesthetics.html
It acts like a photoshop software, for you to visualize how you look like with sharper nose and bigger eyes or v shape chin! I took one of my photo, edited it and because of my noob skills, it turn out kinda eerie. HAHA.
You can try it too! Visualize how you would look like with different features! 😀