This is what I started with. I chose this hook because the metal was already rusted.
Take all the hardware off if you can and, using a medium course sand paper, sand most of the original paint off.
Make a mixture of mud and course sand that is pretty thick. I used a coffee filter to get most of the water out. Brush a coating on that is not too heavy and dry it out in the sun. I left the hardware on for this part because the mud would cover up the original screw holes and I didn't really want to make new ones.
After the mud is dry sand it all off again. Remove the dust with a damp cloth. Take a small Philips screw driver and pound clusters of holes together in your wood. Scratch it in some areas and chew a few of the corners up.
There, that's better. So pretty. Now off to find the perfect spot for them and build a beautiful display.