It would mean doing a bit of repositioning and believe me I know what a hassle that is...been working with a similar image using Lisha PT and a modified P4 horse/Unicorn character which has a smaller neck area for better fitting to the female hip. In your image, the body of the centauress has to move as if it were one. So if it is coming out of a gallop and stopping abruptly to turn and shoot it would turn as a horse would turn...at the horse waist and neck as well as at the waist and shoulders of the human body parts. I think it would be hugely more dynamic and realistic if both bodies are into that stop/slide/turn and set up for the shoot instead of the way it is. The two bodies seem to be working aganist each other instead of together.The horse body seems off center and unballanced and she seems too stiff for a creature used to the bow and setting up "off the hip" shots. Don't know if you have ever shot a bow but it is a bit more difficult than it appears in the movies and this kind of "off balance" would not get her the bird! I would have to agree with the concern for a breast guard especially with the position of the release hand. Should be up at the jaw line for proper alignment. Also your idea of adding a forearm guard is a dire one. Bow string and fletching when released are a mean pain when whipped agains the forearm. I like either the blonde hair or the black but one little thing you may consider...the horse has a black tail and black socks so I would have given her black hair to match and contrast the skin tones of horse and woman parts. I repeat it is a nice image but just my two and a half cents worth! :)