You can do this by use of markers clearly showing the up side of the box
. If they are heavy or bulky, you can consider looking for moving boxes that have handling slots. These are efficient enough and can allow even two people or more to be able to carry the delicate item as it gets loaded and unloaded in the old home. You would also rather to take them with you on your small car just to be certain that nothing happens to them or damages them in the least. All you are trying to avoid is anything that will spoil the excitement you have as regards your moving to France. Don't leave anything to chance as you plan to move.