I'm going to be blunt and say that I hope the client didn't pay a lot for these. There are a lot of issues with this set, some of the most significant are: Lack of fill light, missed focus, and poor posing. I'll pick Alexis9 as an example. You've chosen to shoot at f1.8 for some reason; based on my estimate of your shooting situation, I'm going to guess that your total DoF was something in the order of 6" or less. Your point of focus seems like it was her left knee with the result that her face is very soft. It appears that no fill light was use causing her eyes to appear as almost solid, dark holes without detail. There is mottling on the skin around her neck and blemishes on her fingers, both of which should have been dealt with in post, and the lens you're using suffers from some HORRIBLE CA. Lastly, you've neglected to level the image.
While I realize that sounds rather harsh, if you're going to move into the realm of the professional, you have to expect to be treated as one. I realize that you're young and without a lot of experience, but people who are paying you aren't going to worry about minor details like that.
There's nothing wrong with wanting to work as a professional, but you need to make sure that you're ready to take the plunge, and it requires a significant investment of time, equipment and money to do so. I would suggest spending a bit more time shooting TFP to learn the craft more thoroughly while you assemble your gear and get your business ducks in a row!
I will say that image #10 in your portraiture gallery is a great image, and with just a little more work in post would be a portrait that any photographer would be proud of!