It's interesting you came up with this from deconstructing a shoe! I agree with SD - it reminds me of an animal's leg in some ways, but I, too, am a realist and don't "get" abstracts all the time.
Zoe makes good points about the patina. To do a really wonderful patina, you want to have highlights, low-lights and mid-tones. One basic way to achieve this is to use liver sulfate as your first patina, let it settle in the deep parts and let it sit until it goes really dark, then wipe it off the rest of the sculpture. The liver sections will be your "darks" or "low-lights" (my terms - there are probably better ways to say this, but this is what's coming out of my fingers right now . . .). Then apply your main color, perhaps a ferric, which can go from a pale gold to a deep, rich red. Once that's done, go over the sharp edges and high spots with a Scotch Brite pad and buff it back until the bronze itself is showing to create highlights. Wax or laquer the finished piece and you're done. (This is how the patinas are done on my bronzes, FYI). Even on my black horses, if you look closely, you'll see the black (liver sulfate) is darker in the depressions and thinner on the middle and high parts of the body. The high edges of the mane and tail are usually buffed back either all the way to bright bronze or nearly there, to look like sunlight on the hair. Varying the body color (black) on a one-color horse is done by varying the amount of patina you put on, the temperature the bronze is when the patina is applied, etc.
Kudos to you for experimenting and learning by doing! Keep up the good work.