Its a really good idea and i can see what you were going for but the big tank on the back is more pointed than youve made it. It kind of reminds me of a turtle as it is now.
It looks like some exotic bird about to take off..though I can imagine how much work must have been put into this, so credit for that.
its good, although i think you need to make the backpart a bit more triangular as it does look slightly like a peacock, but the body and legs are pretty awsome, good idea!