Hello,
the figurine of Sacajawea ist very nice sculpted.
If you want to creat a historical correct figurine I suggest the following changes:
1. Dress: Womans dress had no sleeves at this time, but a kinde of Poncho on the arms. So cut off the lower part of the sleeves and mad a kinde of poncho.
2. Cradle: The cradle was always held by a horicontal strap above the womans brest and not two vertical straps. This should be changed
Also the cradel was much lower on the back of the woman.
Many greetings
Bruno