The colors could do with adjustment - not so saturated, and different hues. Straight black doesn't look good either, maybe a more charcoal grey or a dark shade of a color in a triad with the other two (in this case, something like a dark blue like #0c1a2d). If this link works then you should be able to see what I'm talking about - any of those swatches will work, for the most part. If not, enter 283648 into the "base RGB" box and pick "Adjacent colors" from the top and drag one of the secondary selectors out so that they're in green/purple territory. Barring all else, at least using something that site gives you should be more visually appealing than how it currently is.
I feel like the name isn't very relevant or fitting for a pony. What does it mean? How does it reflect on them as a character?
Clumsiness seems like a trait that precludes being in the Wonderbolts. They're an ace aerial acrobatics squad; it would be like making a character an uncoordinated Olympic gymnast - it makes no sense.
Being an Element seems kind of... I hate to say it because it's not very helpful and doesn't get at the root of the problem, but it's Mary Sue-ish. It feels excessive to make a character something like an Element because of that story element's prominence in the show. It would be like making your character the President or something. It also places your character into the proximity of the show's main cast by proxy, which is also rather excessive in the world of making OCs - making your character as important as or more important than main or supporting characters (the m6 and the princesses, respectively, for example) is kind of a problem.
Lastly, it seems you already posted this to the sub at a different time. There's no need to double post, especially so soon after the first post.
Pick colors that aren't so saturated. Use this to pick a color scheme that's not awful as well; the "adjacent colors" and "triad" settings will net you something better than what's currently there. Experiment with saturation and brightness too, but it's generally a good idea to avoid the extremes of the scale.