well, for a first effort, I will be softer.
if you do not want to do too much DI after you had taken the picture, then you must do the lighting correctly before you shoot.
Well, I am assuming that it is not your original intention to show all the blemishes on the model's face. In general practice, to smoothen shin blemishes, you over expose the skin 1 to 2 stops. However, you should not be using the harsh lights, as you did in these pictures. It will not work.
Anyway, learn lighting, will serve you well.
Btw, not doing post processing/DI is not a badge of honor. It's great if you can get as close to the final image as you wanted when you press the shutter, but then, if you failed, you absolutely should see if DI might help.
With these 3 pictures, I have not idea what you were thinking when you shot them, but the final results are nothing to write home about. I will take this as a loearning process, forget about these pictures, and reshoot.