I think your white balance is off. It is too yellow - the picture has a yellow cast (it is too warm) and the bunny's eye shows the flash's reflection and this is not good!
You need to remove the reflection from the bunny's eye and reduce the yellow cast.
I know in majority of cases the flash reflection is undesired and uninteresting, but in this case I am quite fascinated by the rainbow mix. I know many people might disagree, but I think some people might also find it interesting. Especially people who are into all things cute and all things rainbow.
But thanks on the white balance tip. I do sometimes have difficulties with colour grading.
The first thing that caught my attention was the unnatural appearance of the bonny eyes. It is unlikely that that will sell. Your images need to have the best chance of selling at all times.