Biodiversity Model #2 - Goliath Beetle

Here is my work in progress model of a Goliath beetle.

I started off by stretching out and cloning planes to form the main husk of the beetles shell.

Next, I made another set of planes which fit across the top of the beetles back, and would form the top of it's head, just as the beetles shell does in reality.

I then created the beetles tusk, and joined it with the head.

I was unhappy with the quality of the head that I had made, so I decided to remake it smoother and with more detail, this time I started with the two smaller tusks the beetle has on either side of it's main one.

Then I added the tusk again, in more detail and more realistic than my previous version.

This is as far as I have gotten at moment with my Goliath beetle, I will post more as I make progress. Any constructive criticism would be appreciated.

Here is the picture I have been using as a loose reference image.