So, this isn't at all a bad design, it just isn't my personal favorite style. HOWEVER.. I think you did what you were going for pretty well. I'm getting very kidcore vibes, but more like preteen. If that makes sense- For me, I wouldn't color it this way, but I think it's fine. I use a lot of colors in my designs, but what I'd recommend is that if you're going to use a color, find a place for it in more than one place. The pink on the hat and the purple sleeves are a little random and I would've made those two things the same color. I get that it's meant to be colorful, I just think it could match a little better. The jewelry is adorable though!