Hey Corey, I understand your frustration, portraits are pretty hard, if one thing is off, it doesn't look right. What I'm seeing is that you are starting with the Loomis method, but are not really using it throughout your drawing. You have to use all those guide lines to help you place all the features of the face correctly. I did a quick sketch of one of your reference pictures to show you what I mean. You'll notice that the Loomis head doesn't fit his head perfectly, that's because it's just an average. It is meant to help us get close, then make changes to get the likeness. I hope this helps, and keep drawing :)

Looking for critique not understanding what I’m doing wrong