As for the minibust looking like he's bald, I lightened up the shadow under the brim, and knocked the saturation down. You can see more clearly:
This is what we in the visual graphics industry call BAD TANGENTS. An image is presented in a way that it awkwardly sends the wrong message.
Because of the angle, it looks like he's bald, or has a buzz cut.
Look at the red arrow.... that dark line around his ear is the back of his head, covered in hair. If the minibust was turned a few degrees to its right, this wouldn't look as strange.
Also, look at the blue arrow I made. Because of the awkward positioning of the minibust, ya can't tell if that curve is his cheek or the edge of his nose.
The basic rule of thumb is: don't have obects in your images appear to butt up against each other. One object should actually be visually stepping across the other, or be a few steps back away from it, so that their is negative space in between.
This could be really cool once we see some more pics!