Where should large carry-on items be stored?

As you board High Fly Airlines, please stow any carry-on luggage in the overhead compartments or under the seat in front of you. Any luggage that cannot be completely stowed under the seat must be placed in the overhead bins. All seatbacks and tray tables must be in their upright and locked positions. Please refrain from using any electronic equipment, including cell phones, computers, or walkmans until after take-off, as they can interfere with the navigation systems. An announcement will be made when it is safe to use such items.