With this pattern you can make your own Mrs. Santa with baby.
The pattern is very detailed and contains a lot of pictures. It was tested by american testers.
It’s written in US crochet terminology, but contains a UK/US terminology and crochet hook comparison chart

Basic Skills Necessary:
magic circle
chain stitch
single crochet
double crochet
slip stitch

Sizing / Finished Measurements:
about 5″ high (without hat)

Materials:
yarn
crochet hook
safety eyes (or embroidery thread for the eyes)
soft stuffing
tapestry needle
embroidery thread
scissors

Check also the pattern for Mr. Santa Claus.