DNF, regarding your portraits, some of them are just stunning, but...
I'm not an expert, just my 2 cents. There are too much art, too much humor, too much drama for stock. I hope you know I mean. Try to be simple. Take a photo of a pretty girl in white shirt with headphones and welcoming expression and you will have it. With all your skills I have no doubt about it. Well, if you moral principles allow you
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. I know people who will say "never ever" and I can understand why.
Again, this is just my very humble opinion.