You messed up the eyes on the first drawing, the right eye (for us) is misplaced. Move it a bit to the left and a bit down, also the nose is a bit too long (maybe the entire face is a bit too long, not too sure about that.) and you should also scale it down a bit.
The second one is pretty good too, but there is something wrong with the area around the lips, not sure what it is though.
Nice drawings.