Create a minimalist birthday greeting card illustration with the following specifications:

Style: Flat design, clean minimalist aesthetic, elegant lines, generous white space
Color palette: pastel pink, blush rose, and soft ivory as the dominant colors — soft, harmonious, and cohesive throughout
Decorative elements: delicate watercolor-style peonies and tiny baby's breath flowers — keep them delicate, subtle, and intentionally sparse
Mood: romantic and soft, perfect for a close friend, warm yet quietly elegant
Layout: Portrait orientation (2:3 ratio), centered composition, well-balanced negative space
Background: Soft solid or very subtle gradient using the lightest tone of the chosen color palette

Additional requirements:
- Do NOT include any text, numbers, or typography anywhere in the image
- No harsh shadows; use soft, diffused lighting only
- Print-ready quality with crisp, clean edges
- Aesthetic reference: think Rifle Paper Co. meets Japanese stationery — delicate, intentional, and beautiful
- The overall feel should be gift-worthy and suitable for both digital sharing and physical printing