Retro Kids' Room Posters

I'm looking for two A3 posters for a kids' room. One poster is for a girl who loves dragons, and the other is for a girl who loves unicorns.

Design Requirements:
- Retro style featuring flowers and rainbows.
- Dragon poster: Primary colors should be green and blue.
- Unicorn poster: Primary colors should be rainbow colors.

Ideal Skills and Experience:
- Experience in retro design.
- Ability to create vibrant, engaging children's artwork.
- Proficiency in color theory and poster design.

Looking forward to your creative bids!