Good way to train your eyes to look for the "needles in a haystack". If you want to know more about the artifact you found, consider posting on this sub-forum
North American Indian Artifacts. An alternative would be to send the pictures to a natural history museum in Georgia or even a archeologist department at a university. I'd also include some pictures of the flakes.
If you really want to have some fun, make yourself a screen box & sift a few shovel-fulls of dirt through it to see what might be just below the surface.