Knitting pattern for the Oléron children's vest

Knitted vest in Kaléïdo (92% bamboo, 8% linen) and Cotton Flower (100% organic cotton). 
Straight cut and short sleeves. 
Model knitted in jersey with more or less wide stripes. 
The vest closes with small flower-shaped buttons. 
The button band, neckline, bottom of the sleeves and body are knitted in flat rib. 
This pattern is knitted back and forth. 
The back, fronts and sleeves are knitted separately. 
We pick up the stitches to knit the neckline and the button bands.
 The model is available from 2 to 12 years old. 
You will need needle size 3 and needle size 3.5.   This pattern is printed in A4 format and presented in a transparent pocket. 
In addition to the explanations for making the model, find advice and tips on knitting finishes, the composition and maintenance of wool, etc.