Written instructions are for adult size (37/38) -- increase stop at 40 sts - using 3.50 mm + aran yarn (aran yarn usually use 4.50 to 5.00 mm hook)

Photo is actually for children size 32 (increase stop at 36 sts)
using DK worsted + 3.50 mm hook (Usually use 4.00 mm to 4.50 mm hook)

FIRST PART :
https://www.facebook.com/eryyusoku/posts/pfbid027jP24zZd5...

SECOND PART :
https://www.facebook.com/eryyusoku/posts/pfbid02QVZvMuaFa...