This Pattern #41 can be used for knitting hat or bonnet to fit 3-9 months babies only with head circumference approximately 15”- 16” (38-40 cm).

You will need 1 oz of nice and soft DK (8 ply) yarn 110 -120 yards approximately and 2 straight needles for the main body of the bonnet and ears, plus 1/3 oz 40yards of different colour and a medium size crochet hook for the antlers. The Floral decorations are not covered in this Pattern / tutorial.
The pattern has many detailed photos to help with tricky points.

Beginners / Intermediate level Pattern by FeltSoapGood