This is a pattern for a baby head band, but it can be adjusted to fit any size head.
(Instructions in ENGLISH and ESPAÑOL)
Photo-tutorial and written instructions.
(plus: links for flower patterns)

You can find the pattern here: Baby Head Band

For this project, you will need:
Materials:
cotton yarn (fine or fingerling # 2), a small amount
Crochet needle No. 3 mm
1 elastic band for pony tails
Sewing needle to attach the flower on the band

Para este proyecto, se necesitan los siguientes materiales:
Hilo de algodón fino (sólo una pequeña cantidad)
Aguja de crochet No. 3 mm
Banda elástica
Aguja para coser la flor sobre la banda