For your spear or whatever long weapon that I've not listed.

I actually made this pose for a naginata and not a spear but I didn't know what else to call this. You may have to alter the pose.
I didn't really know how to make this pose, I stood in front of a mirror with a broom lol I tried to recreate it here but it wasn't perfect. Think maybe it's off because the models aren't as flexible?