Eyebrow help, please? =( Confused about my brow shape!

[helloangel]

Hey guys, I needed some help about pinpointing a brow shape that works best for my face. I started threading them years ago and they came out pretty well, but I believe one time they came out too thin. I didn't even notice how different they looked until I saw older pictures. I have gone through different stages of my brows and I don't know which one works best for my face. I uploaded three pictures of me with three different looking brows, please let me know what looks best and any tips/advice is highly appreciated! Thank so much =)

a) http://img.photobucket.com/albums/v296/Fujisaki/IMG_2037.jpg B) http://img.photobucket.com/albums/v296/Fujisaki/vanity.pngc) http://img.photobucket.com/albums/v296/Fujisaki/photo7.jpg