Well it seems that things died a bit... so I have been trying to get the project moving by removing the need to sculpt every head. As a result, I decided to try using an old style, Mantic Steel Warrior head (now called militia) and this is what I ended up with:

He is a standard mechanic/engineer and has the usual Anvil Industry weapons and pack. I think the large size of the helmet works very well and I am going to continue with a few more of these .