A nice macro with sharp focus and good color. Rotating the image to an angle or cropping off-center might make it a little more dynamic. I assume others have mentioned the unnecessary border.
I really love the sharp focus on the spines. Terrific. Having said that, they seem to be the only things in sharg focus. Would a little deeper DOF have hurt? The border dampens my enthusiasm for the photo.
I don't know what size these are normally, but because the color and composition are so lovely, i'm not going to worry about it. This is a stunning photo to me.
These types of shots sometimes are helped by bracketing your depth of field (aperture) so the foreground is nice and crisp and the background gets fuzzy and less distracting. Lovely colors in this image; border could be smaller...