It is not possible, but yes you can lie and get the closed eye look, there is a difference. I personally would not do it a professional photographer, as to get it to look right is not easy at all.

That would be a lot of work. Most people would use older tablets, which have the ability to have 1000’s of photos stored on in, perhaps just an easier way to go ?

This may sound odd, but the posing guides these days and so are mostly a total waist of time. Go look and people and styles in the 20’s to lets say the 60’s and how people carried themselves. Those are GOLD and work so so well. Search for photos of that time period, trust me worth a look…

First thing to understand and remember, is NO ONE CARES ABOUT YOUR PHOTOGRAPHY !!!, but hangon, that doesn’t mean you cannot get people to admire it. However to do that, you need a more unique style and subject matter that is not seen as often. Everyone with a phone is taking photos, so you need to ability to stand out of the crowd, and the crowd these days is EVEYONE. It takes time and more time, to find your unique ability to portray things in a visual manner that gets attention.

For the most part they are paying you for your skills, and your “style”. As far as blemish removal and other options go, that can be discussed. You need to learn to manage clients, meaning give them realistic ideas as to the end result. If they are for silly things to be done, make sure you have other charges in place.