Create a captivating cover for a coloring book aimed at teenagers, titled **"Valkyries and Amazons."** The cover should evoke a fantastical and heroic universe, incorporating the following elements:
1. **Main Theme**:
- Illustrations of Valkyries and Amazons in dynamic poses, representing strength, bravery, and beauty.
- Mythological elements such as shimmering armor, swords, shields, and fantastical creatures (like dragons or griffins).
2. **Artistic Style**:
- A detailed and intricate illustration style that invites coloring. Lines should be clear and sharp to facilitate coloring.
- Integrate floral or geometric patterns around the characters to enrich the background.
3. **Color Palette**:
- Use a vibrant color palette for the digital design (which will be colored by users), including shades like royal blue, emerald green, ruby red, and gold.
- The background can be softer to make the main characters stand out.
4. **Typography**:
- The title "Valkyries and Amazons" should be in bold, stylized letters that evoke power and elegance.
- Add an engaging subtitle, such as "A Colorful Journey into the World of Legendary Heroines."
5. **Overall Ambiance**:
- Evoke an epic and inspiring atmosphe, Cover design for a teenage coloring book titled 'Valkyries and Amazons'. Dynamic poses of Valkyries and Amazons. Shimmering armor swords shields. Background with floral and geometric patterns. Bold title with a subtitle. Evocative of a fantastical universe
