This incredible scene features a brave warrior woman who, rather than the mask and armor one can usually find protecting heroes, is adorned in a beautiful blue outfit with a purple scarf. She stands ready with her sword held high, wearing a shield on her back and with her bright blue and purple hair blowing in the wind. Beyond her is the looming figure of a green dragon - a powerful adversary silently looking on.
I would suggest coloring the woman in deep shades of blue and purple, with streaks of white or silver to add highlights. The dragon could be colored in deep blues and greens and maybe a yellow or orange fire breath to make it look even more intimidating. The sky behind them should be a light, airy blue with white clouds, and the ground could be a mix of earthy browns and greens.