Personally I'd say that you should go for a warmer shade of yellow, since this one is a bit cold. The pink makes everything seem a bit too... girly, kind of.
I found a picture of your character Carousel and took some time to compare the colour schemes and other traits. http://puu.sh/XIRb First of all, their scheme is different, the only thing they have in common are the green stripes (which aren't in the same style at all), the purple bodytone and the fact that they are a unicorn. I understand that the stripes might make them seem similar, but I want you to understand that things like these happen and that, if you would compare them, they are very different. If you really want me to change her design, I will, but I want you to know that I haven't seen your pony before and that this character was not created with your Carousel in mind.