This looks fine as a design for a shy eight year old girl. The simple A-line knee-length skirt and the puffy princess sleeves, along with her nervous expression and loose hair get across a sense of an innocent character, perhaps somebody very proper and feminine, or who has been raised to perform that role. In other words, it's a decent character design, because it's getting across information about the character!
And that's all good character design is. It doesn't have to be the best drawings, or the most detailed or intricate, it just needs to help the viewer tell characters apart and communicate important information about them while being a suitable detail level or style for the medium it was created for (be it 3D animation, a 2d visual novel game, a weekly webcomic or anything else). Basically, just keep working at your anatomy, line quality and perspective, and spend time looking at fashion and historical clothing and trying to expand your knowledge of how to use garments, shapes and colours to broaden your character design vocabulary.