Arm Modelling

Bellow are some screenshots of my process of modeling the broadsides missile arms. 

You can see above from the original broadside model that I have made some alterations to add a bit more detail to the arm. I instead wanted too have some exhausts that would extrude out of either side of the arm to give the idea that when the rockets fire off they can let out head from the side of the arms. I wanted to do this to add the extra detail of realism to my model, as I don't want my final outcome to look as if it was a 3d render of a warhammer figurine and is instead an actually asset for a game.

You can see above how I began adding in the pivots into my model pieces so that I could pose it later on. I ensured that the arm had two pivots, one which could move the entire arm if it wanted too, and one that was placed within the elbow, so that I could bring the arm up and down as you can see in the second screen shot of the three.