Yin and Yang Medieval dragons in blue and red for chest tattoo*

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This customer received 33 tattoo designs from 13 designers. They chose this tattoo design from SAI DESIGNS as the winning design.
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Tattoo Design Brief
I've always wanted to get a chest piece on the left side of my chest that is a yin and yang of two medieval-style dragons.
I would like an unhappy-looking dragon that is blue in color with red eyes, to symbolize the bad within the good.
I would like a happy looking dragon that is red in color with blue eyes, to symbolize the good within the bad.
As with other Yin and Yang symbols, they would be circling each other. Leave as little empty space as you can on the project.
I really enjoy the use of color and shading, however, I understand tattoos can only be mixed so much.
I also understand that assigning emotion to a dragon may be a difficult challenge. If it can't be done I completely understand. Perhaps adding scarring to them or some kind of another marker would make it noticeable? I don't know I'm not that good at art.
More detail would be better, and something with a more realistic style.
Also, the design would ideally be a vector so I could shape it to my body.
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Target Market(s)
Myself
Look and feel
Each slider illustrates characteristics of the customer's brand and the style your logo design should communicate.
Elegant
Bold
Playful
Serious
Traditional
Modern
Personable
Professional
Feminine
Masculine
Colorful
Conservative
Economical
Upmarket
Requirements
Must have
- Medeival style blue Dragon with Red Eyes
Medeival style red Dragon with Blue eyes
Dragons are the Yin Yang
Nice to have
- Blue dragon with red eyes looking unhappy/mad/angry/etc
Red dragon with blue eyes looking happy/excited/etc
Lots of color
Should not have
- Cartoon feels
Blood/gore