This a pattern for a simple earflap hat with button fastening under the chin and a sweet rose on the brim.
It is an 8 page pdf written pattern with plenty of photos to guide new knitters through the process.

The pattern gives instructions for 6 sizes:
0 - 3 months
3 - 6 months
6 - 12 months
1 - 2 years
2 - 4 years
4+ years

There are instructions for BOTH knitting flat and knitting in the round. Choose whichever method you are most comfortable with.