Junkers 101
Step 11
Okay, it might not look like much, but there’s a certain order I like to do things in here:

1) Base 2) Backpack 3) Arm 4) Shoulder Pad 5) Shield 6) Shotgun

The reason for this is to ensure that none of the pieces being glued on get in the way of other pieces.  For example, if I had attached the shield before the shoulder pad, I might not have been able to get a natural-looking fit on the pad.  Also, don’t be afraid to experiment with components.  For example, here I’ve turned the shield through ninety degrees to get the look I want.

If you are attaching a shotgun to a backpack, it is worth trimming away the rivets on the side of the shotgun, so that the glue has more surface area to adhere to and will create a stronger bond.
Step 12
Now for the other arm.  After cleaning up the arm and sword, carefully cut the hilt from the guard of the sword.  We have a use for that piece, so don’t lose it!  Ensure that both the top and bottom sides of the fist and the underside of the sword’s guard are nice and flat for gluing.