Well, I am really into ants(yes the living ones) and this isn't as good of a representation of a fire ant(solenopsis invicta) as it could be. Id say to make the abdomen more rounded. Also remove the front 2 spines and change the last one to a short spine. Also, I'd make the thorax smaller as the large thorax is more typical of a queen ant. Last thing remove the flame on head.