It's easy...
one
Place pocket in desired location with logo facing up.
two
Set iron to cotton setting. Do not use steam. Iron on a rigid surface like an ironing board or table covered in a towel.
three
Iron edges of pocket until adhered (about 30 to 60 seconds). Make sure to keep the iron moving and avoid ironing the logo.
four
Let item cool for 10 minutes and go enjoy your newly enhanced clothing!