Sure! It took me a minute to track them down, but here’s a nice straightforward example:
^ That portrait was drawn using these references:
The lighting in the references doesn’t match at all, but I figured out how to draw the final portrait in such a way that it looks comfortable and natural.
My advice to you would be to figure out what kind of lighting you want first. Sometimes it gets tricky. Sometimes you’ll start with an image, and maybe it’s a cool pose, and you REALLY REALLY want to use it. But you can’t find anything to use it with.
So you have to scrap it. And keep hunting until you find stuff that does work together. Or at least almost works together (depending on how much skill you have). Sometimes you end up photographing your own body parts. Or making your dad sit in a chair so he can be Dean Winchester. :P
But pay attention to the lighting, I guess? Lighting is the most important. And pay attention to what your focal point will be. With the Benny portrait, I found a face I really liked, but I didn’t have a body to go with it. So I had to go body hunting. That happens a lot.
And if I don’t care about body hunting, I’ll just fake it. Like here’s another example where I sort of faked the body (and also the top of the head):
^ That portrait was made using this reference, and you can see how I changed things and what I emphasized when I got to drawing:
Sometimes I completely fake the whole body, which is okay, because if I do a good job, hopefully you won’t even notice. Like this:
I draw fake bodies all the time. It’s terrible. :O
I hope that helps you! It takes a lot of practice—not the drawing part so much, but learning how to tell what looks natural.