Nikon d3100 eyeshadow picture?

People have been requesting my eye makeup looks! But when take pictures of my eyeshadow look, they don't look as good as they actually are. If its about lighting, i bought the diva ring light, that should be good. But still my eyeshadow pic does not look so smooth, i'm not satisfied. Unlike some other beauty gurus. I'm using nikon d3100, what mode should i put on when i take pictures of my eyeshadow looks? What should i do so that they look good? Is my camera not good? Or should i download any applications on my macbook so that i can edit them?

How many times are you going to ask this question? ONCE IS ENOUGH!

Use more light.