Check out this sway on Air Cadet Badges – this will give you everything you need to know on placing your badges on your tunic
When wearing the tunic you shall always keep all pockets buttoned. Be sure all front buttons (except the top) are also fastened. You should keep your tunic well pressed. The sleeves of the jacket shall be roll-pressed with no creases. Be sure your belt is even with no twists. The buckle of your tunic belt is to be centered. The pockets of your tunic should be empty. The tunic should be free of wrinkles and stains. All badges shall be tightly sewn down with like-coloured thread (the thread shall not be visible). A nametag shall be centered over the right breast pocket.