Your child needs proper evaluation, which won't be possible from just single photo or online opinions.
Need to check that foot eversion only occurs while child is standing on the feets, or it has been the same since birth and stays such even if child is lying on bed.
Next Steps
Consult a paediatric orthopaedic, they will provide you with allt he details. including types of shoes.
You might also need to do some physiotherapy at ankle joint, Better to have offline consultation.
Health Tips
Don't worry about this condition, non surgically or surgically, this condition has good results.