As a tattoo, dragons are usually represented in the form of the Eastern dragon and of oriental styles. Dragon tattoos are normally seen in black and commonly drawn with flames and fire. But, Japanese and Chinese dragon styles are usually pretty ornate and can be in color or black and white shades.
It's up to you as to what dragon style you choose for your tattoo.
Dragon Tattoo on Girl Shoulder
Dragon Tattoo with full color on girl shoulder
Tattoo Dragon on Girl's Back
Tribal Dragon Tattoo on girl's Back