Oy, so it's for your portfolio, to eventually get work in the industry. Perfectly valid. I asked as it helps us to see the work from that perspective, not just that it looks good (they do look good), but to try to provide feedback as a company would.
For example, if it was for animation or comic, I'd say these work great (they were inspired by animation xD), but if it was for a game, I definetly prefer the ones with the buns up as it would provide a clear indication of the character stance (combat vs non-combat)
Looking forward for more!