Swedish Pregnancy Platform Illustrations

We're building a Swedish pregnancy platform, and need 40 hand-drawn illustrations showing fetal development from week 4 to week 40 — one image per week.
The work:

40 illustrations, one per pregnancy week (week 4 through week 40+)
Hand-drawn style, soft and warm aesthetic (we'll share visual references)
Consistent style and color palette across all 40 images
Medically accurate fetal development per week
Delivered as high-resolution files (PNG + source files)

Important note on scope:
The first weeks (4-12) show the biggest visual changes between weeks — embryo to recognizable fetus. From week 13 onward, changes between weeks are minimal — mostly size and small developmental details. This means the illustrator's effort is front-loaded, and later weeks are quicker variations of the same base.
What we're looking for:

Portfolio with hand-drawn illustration work, ideally medical, editorial, or children's content
Ability to maintain consistent style across a series
Clear timeline and milestones

To apply: Share your portfolio, your proposed timeline, and your total price for all 40 illustrations. Tell us briefly how you'd approach style consistency across the series.