Good for you for putting your stuff out there I know that takes courage. In my opinion and hopefully this is helpful to you. Something that stood out to me in the last drawing is that it looks like you are adjusting image elements to make them more semetrical from what they actually are. I think as humans we tend to prefer semetry but it if you look closer at the photo you can see that there's actually alot of asemetry. For example. You have centered the pupils of the eyes, but in the photo they are only half circles and much more cut off at the top, this seems to make a much stronger expression. Also, the lips in your drawing are much more mirrored in the actual photo. Asymetry can give an image much more movement where as symetry tends to make it more static. I know it can seem counterintuitive but I'd encourage you to give it a try.