Flatten the end of your piece rounding the corners to form what I call a beaver tail. Place half of your flattened area over the edge of the anvil and tap it down to a right angle. Flip the piece over and with glancing blows put a nice curl on the end. If you double click on the photos you can enlarge them to see better.
Reheat about 3" up from the end and quench the curl you have placed on the end in your tub. This willl allow you to hammer on it with out deforming what you just did. Place the curl facing up and about 3/4" pass the horn. Hammer down on the end and it will form around the horn keep hammering and moving your piece forward till you form a half circle or a shape you find pleasing.
Repeat the flattening, curl and hook. Some would say this is a mistake but by having both hooks facing the same side at this stage allows you to do several things. When you make the second hook you can ensure they are the same shape and height. Now is time for us to heat the center of the hook. This is made easier by having both hooks on the same side.
Nice even heat down the back of the C hook. Place the hook top even with the vise top. put the twisting wrench at the top of the opposite hook. Give the hook a good twist till you have a S hook. All thats left is a wire brush and a coat of wax.