Put prices on everything. Post bright orange signs with a very large tip black markers, most people post with markers that no-one can see from the road. Have one table where you can fold the items or bag them. Have paper to wrap glass items in and double bag them. If you are the only one with the money, wear a fanny pack and have lots of ones. Try and not put items on the ground, people will walk right past them. Put like things together: bath, bed, kitchen. Have a man's table. Hang clothes if possible otherwise, fold them over and over, keep it neat.
This is what I look for when I garage sale.