Well part of the problem is you're using a reference made by a guy who poorly traced over someone elses art. Try comparing your model to the original danger girl sheet that he used.
Aside from the fact that she's basically got infant hands your model doesn't look too bad.
If you prefer to have it match the reference though her thighs are too thin, her hips don't stick out far enough, arms are too short and her waist (front view) is not thin enough. You've also lost the curvature in the leg and it looks like you placed the elbow too far up the arm.
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Part of me is forgiving some of the proportions as well due to the very manga-based style that I'm seeing.
Legs also seemt to be TOO turned in from the front view. You might want to bring the feet together a bit and just turn out the knees a tad.
Aside from the fact that she's basically got infant hands your model doesn't look too bad.
If you prefer to have it match the reference though her thighs are too thin, her hips don't stick out far enough, arms are too short and her waist (front view) is not thin enough. You've also lost the curvature in the leg and it looks like you placed the elbow too far up the arm.