ye if what you say is true, then i would compete at all natural, while you have a good physique i dont think anyone will say you used gear.
Do you do incline benches or flat, might want to try inclines for the chest???
How big are the wheels, hard to tell from that pic. they look good, maybe 2-3 more inches, i dont know, im not an expert.
also jsut noticed something, your right side seems to be a tad bigger, might want to work on proportion.
either way lloking good for basically being all natty, u know what BF% you are?