It is a "temproary patch" that should be worn over the right chest pocket (or hung from the button of the right chest pocket).
If it is actually a pin and not a badge, it is usually pinned on the right breast pocket of the formal uniform, but if it is a badge or crest, it goes on a badge blanket, and not on the uniform.
I sewed his newest merit badge on my brother's scout uniform.
it is true
The librarian badge is a badge of office (like Patrol leader or Scout Master), If you are interested in maintaining the troop library speak to your scoutmaster or SPL.
They should wear their merit badge sashes. OA sashes are generally not worn.
Try rubbing with Goof Off, it removes many glues.
The Bridge to Cadette Girl Scout Award is placed directly under the Brownie Wings on a Cadette sash or vest.
The Arrow of Light award is sewn centered and just under the left shirt pocket on the Boy Scout uniform.
Eagle Palms are pinned onto the ribbon of the Eagle Scout medal. If the Eagle Scout is an adult leader, the palms may be pinned to the Eagle Scout knot insignia.
Suggest to your son that he ask his Patrol Leader or Quartermaster.
No, currently [2013] there is no skiing badge for Girl Scout Brownies in GSUSA.
A name of a Merit badge? Automotive Maintenance.