I feel like this is a pretty fantastic vector over-all, but the devils are in the details. I think maybe you could do two things with the cutie mark- the mark itself looks good, but it kinda stands out too much. Just make it a bit smaller, and then maybe see how it looks minus the outline. Although it might be fine if you just resize it. It just stands out too much. Small things, though, and considering, this is very well made!