Sean is right, you have only a decal there with gradient effect. Dont use already-made stuff (unless hi-res logos) if you want to get really far.
If you want to see how skins look really good then go to see IGTC / MoE sections for skins from every season, skinners put up their best efforts to represent their own skills. Skin doesnt have to be super complicated to look excellent, n1 racing was probably the best example of this.